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Liu H, Zhang H, Wang C, Dang Q. Efficacy and safety of laparoscopic vaginoplasty with peritoneal flaps and cervicoplasty in patients with congenital cervical and complete vaginal atresia: a pilot study. Quant Imaging Med Surg 2024; 14:3121-3130. [PMID: 38617156 PMCID: PMC11007531 DOI: 10.21037/qims-23-1226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/29/2024] [Indexed: 04/16/2024]
Abstract
Background Hysterectomy places a considerable physical and mental burden on young female patients with congenital cervical and complete vaginal atresia. Thus, it is necessary to develop a method to detach the obstruction and simultaneously preserve the vagina and uterus in these patients. This study sought to evaluate the efficacy and safety of laparoscopic vaginoplasty using peritoneal flaps and cervicoplasty in patients with congenital cervical and complete vaginal atresia. Methods Between April 2013 and June 2022, nine patients with congenital cervical and complete vaginal atresia at Henan Provincial People's Hospital were enrolled in this prospective study. All patients were treated with laparoscopic vaginoplasty using peritoneal flaps and cervicoplasty. Baseline clinical data (e.g., age and uterus size) were collected. The surgical success rate and adverse events were assessed. Results The nine enrolled patients had a median age of 15.0 [interquartile range (IQR), 14.0-18.0] years, and five of these patients had pelvic adhesions. The surgeries were successful in all (9/9) patients, with the vagina, uterus, and a normal menstrual cycle being preserved. After a median follow-up duration of 48 months, the neovaginas had a median length of 7.5 cm. Postoperative complications occurred in three of patients and were cured with the appropriate treatment. The five married patients reported being satisfied with their sex life. Conclusions The study preliminarily demonstrated the efficacy of laparoscopic vaginoplasty using peritoneal flaps and cervicoplasty in patients with congenital cervical and complete vaginal atresia. However, due to the small sample size, lack of a control group, and relatively high incidence of adverse events, further studies are still needed to verify these results. Regardless, our findings establish an approach for preserving both the vagina and uterus for patients with congenital cervical and complete vaginal atresia.
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Affiliation(s)
- Huili Liu
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Henan University, Zhengzhou, China
| | - He Zhang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Chenman Wang
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Qun Dang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
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2
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Geng L, Dang Q, Lv G, Wang L, He S. Effect Of Urinary Kidney Injury Molecule-1 Levels On Short-Term Prognosis Of Chronic Heart Failure. J PAK MED ASSOC 2023; 73:1973-1977. [PMID: 37876054 DOI: 10.47391/jpma.7428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objectives To explore the influential elements of urinary kidney injury molecule-1 levels in chronic heart failure, and to judge its ability to predict 90-day rehospitalisation. METHODS The cross-sectional case-control study was conducted from November 2020 to April 2021, at Hanzhong Central Hospital, China, and comprised adult patients having chronic heart failure with normal renal function in group A and healthy subjects in control group B. Patients in group A received anti-heart failure therapy for 1 week in hospital and were followed up for 90 days after discharge. Blood pressure (BP), kidney injury molecule-1, creatinine and serum pro- B-type natriuretic peptide levels were evaluated at baseline and 1 week after treatment in group A, while the samples were collected only at baseline in the control group B. Data was analysed using SPSS 22. RESULTS Of the 102 subjects, 68(66.6%) were in group A; 44(64.7%) males and 24 (35.3%) females with mean age 62.38±9.51 years. The remaining 34(33.3%) subjects were in group B; 21(61.7%) males and 13(38.2%) females with mean age vs. 58.82±8.11 years. The urinary kidney injury molecule-1 level in group A was essentially on the increase compared to group B (p<0.05). After 1 week of treatment, the kidney injury molecule-1 level decreased compared to the baseline value in group A (p<0.05). Diastolic blood pressure and pro-B-type natriuretic peptide were the determinants of urinary kidney injury molecule-1 level, and urinary kidney injury molecule-1 level before discharge was significantly associated with rehospitalisation within 90 days (p<0.05). CONCLUSIONS Urinary kidney injury molecule-1 level before discharge was a significant predictor of rehospitalisation within 90 days, and diastolic blood pressure and pro-B-type natriuretic peptide levels were the influencing factors of urinary kidney injury molecule-1. Also, urinary kidney injury molecule-1 levels were significantly raised in chronic heart failure.
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Affiliation(s)
- Like Geng
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, China
| | - Qun Dang
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, China
| | - Guo Lv
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, China
| | - Luzhao Wang
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, China
| | - Sanjun He
- Department of Laboratory Medicine, Hanzhong Central Hospital, Hanzhong, China
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3
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Liu H, Zhang H, Wang C, Dang Q. Retraction: efficacy and safety of laparoscopic vaginoplasty using the peritoneal flap and cervicoplasty in patients with congenital cervical and complete vaginal atresia: a pilot study. Ann Transl Med 2023; 11:331. [PMID: 37404983 PMCID: PMC10316101 DOI: 10.21037/atm-2023-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 05/12/2023] [Indexed: 07/06/2023]
Abstract
[This retracts the article DOI: 10.21037/atm-23-217.].
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Affiliation(s)
- Huili Liu
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Henan University, Zhengzhou, China
| | - He Zhang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Chenman Wang
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Qun Dang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
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4
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Liu H, Zhang H, Wang C, Dang Q. Efficacy and safety of laparoscopic vaginoplasty using the peritoneal flap and cervicoplasty in patients with congenital cervical and complete vaginal atresia: a pilot study. Ann Transl Med 2023; 11:257. [PMID: 37082690 PMCID: PMC10113076 DOI: 10.21037/atm-23-217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/15/2023] [Indexed: 02/25/2023]
Abstract
Background Hysterectomy places a huge physical and mental burden on young female patients with congenital cervical and complete vaginal atresia. Thus, it is necessary to develop a method to detach the obstruction and simultaneously preserve the vagina and uterus in these patients. This study sought to evaluate the efficacy and safety of laparoscopic vaginoplasty using the peritoneal flap and cervicoplasty in patients with congenital cervical and complete vaginal atresia. Methods Between April 2013 and June 2022, 9 patients with congenital cervical and complete vaginal atresia at Henan Provincial People's Hospital were enrolled in this prospective study. All the patients were treated with laparoscopic vaginoplasty using the peritoneal flap and cervicoplasty. Baseline clinical features (such as age, uterus size, etc.) were collected. The surgical success rate and adverse events were assessed. Results The 9 enrolled patients had a median [interquartile range (IQR)] age of 15.0 (14.0-18.0) years, and 5/9 patients presented with pelvic adhesions. The surgeries were successful in all (9/9) patients, who preserved their vagina and uterus with a normal menstrual cycle. After a median follow-up duration of 48 months, the neovagina had a median length of 7.5 cm. Post-surgical complications occurred in 3/9 patients, which were cured by an appropriate treatment. The 5/9 married patients reported being satisfied with their sexual life. Conclusions Even though the current study preliminary exhibits the efficiency of laparoscopic vaginoplasty using the peritoneal flap and cervicoplasty in patients with congenital cervical and complete vaginal atresia, due to the small sample size, lack of a control group, and relatively high incidence of the adverse events, further studies are still needed to verify the current findings. The current study put forward a further direction for preserving the vagina and uterus simultaneously for those patients with congenital cervical and complete vaginal atresia.
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Affiliation(s)
- Huili Liu
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
- Department of Gynecology, People’s Hospital of Henan University, Zhengzhou, China
| | - He Zhang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Chenman Wang
- Department of Gynecology, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Qun Dang
- Department of Gynecology, Henan Provincial People’s Hospital, Zhengzhou, China
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Dang Q, Song M, Dang C, Zhan T, Zhang L. Experimental Study on Solidification Characteristics of Sessile Urine Droplets on a Horizontal Cold Plate Surface under Natural Convection. Langmuir 2022; 38:7846-7857. [PMID: 35696680 DOI: 10.1021/acs.langmuir.2c01154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
As the human excreta, urine is often used as one of the test materials in medical research due to its composition and content directly reflecting the health status of the body. Considering that the substances in urine may show different effects on its freezing process, solidification characteristics of sessile urine droplets on a horizontal cold plate surface under natural convection were experimentally investigated by comparing with those of water droplets under same conditions. To make the conclusion analysis more reasonable, the urine of a human without any diseases, especially metabolic diseases, was treated and used. The characteristics include nucleation location, dynamic variation of droplet color, and temperatures at different heights inside the droplet, and so forth. It was found that, similar to that of a water droplet, the solidification process of a urine droplet also experiences the following four stages: supercooling, recalescence, freezing, and cooling, in chronological order. Differently, the urine droplet changes from transparent to blur white at the supercooling stage due to the precipitation of inorganic salts. For nucleation locations, 46.67% cases are at the bottom, while others are at the top and middle of urine droplets. For a 10 μL droplet on a surface of -30 °C, urine has a 0.95 s freezing duration shorter than water, and a 5.31 °C lower phase-transition temperature. Results of this study are expected to reflect the content of substances in urine and thus provide references for urinalysis of patients with metabolic diseases.
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Affiliation(s)
- Qun Dang
- Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Mengjie Song
- Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Chaobin Dang
- Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Tianzhuo Zhan
- Graduate School of Interdisciplinary New Science, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Long Zhang
- Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
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Xu G, Bai X, Dang Q. Aromatic Heterocycles as Productive Dienophiles in the Inverse Electron-Demand Diels-Alder Reactions of 1,3,5-Triazines. Acc Chem Res 2020; 53:773-781. [PMID: 32227911 DOI: 10.1021/acs.accounts.9b00604] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Heterocycles are often found as the structural nucleus in natural products and biological active compounds. Consequently, research toward the discovery and development of novel and efficient synthetic methodologies is of constant interest to organic chemists. Diels-Alder reactions are powerful at forming multiple bonds simultaneously, often with stereoselectivity, and thus are one of the most widely used synthetic methodologies in organic syntheses. Inverse electron-demand Diels-Alder (IEDDA) reactions, a subclass of Diels-Alder reactions, have been developed for the efficient synthesis of various heterocycles, with 1,3,5-triazines used as azadienes. The initial 1,3,5-triazine IEDDA reactions mostly included nonaromatic, electron-rich species such as vinyl ethers, enamines, ynamines, and amidines as dienophiles, producing in high yields pyrimidine derivatives with excellent regioselectivity. We hypothesized that some electron-rich aromatic heterocycles could be studied as potential dienophiles for 1,3,5-triazine IEDDA reactions; 5-aminopyrazoles proved to be productive dienophiles leading to high yields of pyrazolopyrimidines. Subsequently, many studies were reported to investigate the mechanism and scope of this new type of IEDDA reaction. Mechanistically, this new type of IEDDA reaction is quite interesting since it entails two aromatic compounds proceeding through a perceived high energy nonaromatic transition state, leading to a new aromatic compound, a counterintuitive process. Both theoretical and experimental studies provide key insights to this reaction mechanism, with learnings from these studies possibly stimulating unconventional thinking in other areas. Theoretical calculations of these cascade reactions of amino-substituted heterocycles with 1,3,5-triazines indicate that the reactions occur in a stepwise fashion via a highly polar zwitterionic intermediate; elimination of ammonia from IEDDA adducts and subsequent retro Diels-Alder reaction drive the reaction toward the fully aromatized IEDDA products. This amino substituent is critical in determining the regioselectivity and driving the cascade reactions to completion. With regard to reaction scope, many amino-heterocycles such as pyrroles, imidazoles, furans, thiophenes, and indoles all proved to be productive dienophiles for this new IEDDA reaction, leading to various fused-pyrimidines in a single step with moderate to high yields and high regioselectivity. Application of this new IEDDA reaction with 1,3,5-triazines was reported to lead to interesting heterocyclic compounds such as nucleoside natural product nebularine and analogues, as well as fluorine-containing fused pyrimidines with potential for biological activities.Herein, the scope of various aromatic heterocycles as dienophiles in the 1,3,5-triazine IEDDA reaction is reviewed. Moreover, both experimental and theoretical studies of the mechanisms for this interesting cascade IEDDA reaction are discussed. Finally, applications of this new type (aromatic heterocycles as dienophiles with 1,3,5-triazines as azadienes) of IEDDA reaction are also covered.
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Affiliation(s)
- Guoxing Xu
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P.R. China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P.R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P.R. China
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7
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Crespo R, Dang Q, Zhou NE, Guthrie LM, Snavely TC, Dong W, Loesch KA, Suzuki T, You L, Wang W, O’Malley T, Parish T, Olsen DB, Sacchettini JC. Structure-Guided Drug Design of 6-Substituted Adenosine Analogues as Potent Inhibitors of Mycobacterium tuberculosis Adenosine Kinase. J Med Chem 2019; 62:4483-4499. [PMID: 31002508 PMCID: PMC6511943 DOI: 10.1021/acs.jmedchem.9b00020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mycobacterium tuberculosis adenosine kinase (MtbAdoK) is an essential enzyme of Mtb and forms part of the purine salvage pathway within mycobacteria. Evidence suggests that the purine salvage pathway might play a crucial role in Mtb survival and persistence during its latent phase of infection. In these studies, we adopted a structural approach to the discovery, structure-guided design, and synthesis of a series of adenosine analogues that displayed inhibition constants ranging from 5 to 120 nM against the enzyme. Two of these compounds exhibited low micromolar activity against Mtb with half maximal effective inhibitory concentrations of 1.7 and 4.0 μM. Our selectivity and preliminary pharmacokinetic studies showed that the compounds possess a higher degree of specificity against MtbAdoK when compared with the human counterpart and are well tolerated in rodents, respectively. Finally, crystallographic studies showed the molecular basis of inhibition, potency, and selectivity and revealed the presence of a potentially therapeutically relevant cavity unique to the MtbAdoK homodimer.
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Affiliation(s)
- Roberto
A. Crespo
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Qun Dang
- Merck
Sharp Dohme Corporation, West Point Pennsylvania 19486, United States
| | - Nian E. Zhou
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Liam M. Guthrie
- College
of Medicine, Texas A&M University Health
Science Center, Bryan, Texas 77807, United
States
| | - Thomas C. Snavely
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Wen Dong
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Kimberly A. Loesch
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States
| | - Takao Suzuki
- WuXi
AppTec, 288 Fute Zhong Road, Shanghai 200131, China
| | - Lanying You
- WuXi
AppTec, 288 Fute Zhong Road, Shanghai 200131, China
| | - Wei Wang
- WuXi
AppTec, 288 Fute Zhong Road, Shanghai 200131, China
| | - Theresa O’Malley
- TB
Discovery Research, Infectious Disease Research
Institute, 1616 Eastlake Avenue E, Seattle, Washington 98102, United States
| | - Tanya Parish
- TB
Discovery Research, Infectious Disease Research
Institute, 1616 Eastlake Avenue E, Seattle, Washington 98102, United States
| | - David B. Olsen
- Merck
Sharp Dohme Corporation, West Point Pennsylvania 19486, United States,E-mail: . Phone: 215-652-5250 (D.B.O.)
| | - James C. Sacchettini
- Department
of Biochemistry and Biophysics, Texas A&M
University, College
Station, Texas 77843, United States,E-mail: . Phone: (979) 845-8548 (J.C.S.)
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8
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Lan P, Romero FA, Wodka D, Kassick AJ, Dang Q, Gibson T, Cashion D, Zhou G, Chen Y, Zhang X, Zhang A, Li Y, Trujillo ME, Shao Q, Wu M, Xu S, He H, MacKenna D, Staunton J, Chapman KT, Weber A, Sebhat IK, Makara GM. Hit-to-Lead Optimization and Discovery of 5-((5-([1,1′-Biphenyl]-4-yl)-6-chloro-1H-benzo[d]imidazol-2-yl)oxy)-2-methylbenzoic Acid (MK-3903): A Novel Class of Benzimidazole-Based Activators of AMP-Activated Protein Kinase. J Med Chem 2017; 60:9040-9052. [DOI: 10.1021/acs.jmedchem.7b01344] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | | | | | - Qun Dang
- Metabasis Therapeutics, Inc., 11119
North Torrey Pines Road, La Jolla California 92037, United States
| | - Tony Gibson
- Metabasis Therapeutics, Inc., 11119
North Torrey Pines Road, La Jolla California 92037, United States
| | - Daniel Cashion
- Metabasis Therapeutics, Inc., 11119
North Torrey Pines Road, La Jolla California 92037, United States
| | | | | | | | | | | | | | | | | | | | | | - Deidre MacKenna
- Metabasis Therapeutics, Inc., 11119
North Torrey Pines Road, La Jolla California 92037, United States
| | - Jocelyn Staunton
- Metabasis Therapeutics, Inc., 11119
North Torrey Pines Road, La Jolla California 92037, United States
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9
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Affiliation(s)
- Kai Yang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University; The College of Chemistry and The School of Pharmaceutical Sciences; Jilin University; 1266 Fujin Lu 130021 Changchun, Jilin P. R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University; The College of Chemistry and The School of Pharmaceutical Sciences; Jilin University; 1266 Fujin Lu 130021 Changchun, Jilin P. R. China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University; The College of Chemistry and The School of Pharmaceutical Sciences; Jilin University; 1266 Fujin Lu 130021 Changchun, Jilin P. R. China
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10
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Yang K, Dang Q, Cai PJ, Gao Y, Yu ZX, Bai X. Reaction of Aldehydes/Ketones with Electron-Deficient 1,3,5-Triazines Leading to Functionalized Pyrimidines as Diels-Alder/Retro-Diels-Alder Reaction Products: Reaction Development and Mechanistic Studies. J Org Chem 2017; 82:2336-2344. [PMID: 28112917 DOI: 10.1021/acs.joc.6b02570] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Catalytic inverse electron demand Diels-Alder (IEDDA) reactions of heterocyclic aza-dienes are rarely reported since highly reactive and electron-rich dienophiles are often found not compatible with strong acids such as Lewis acids. Herein, we disclose that TFA-catalyzed reactions of electron-deficient 1,3,5-triazines and electron-deficient aldehydes/ketones can take place. These reactions led to highly functionalized pyrimidines as products in fair to good yields. The reaction mechanism was carefully studied by the combination of experimental and computational studies. The reactions involve a cascade of stepwise inverse electron demand hetero-Diels-Alder (ihDA) reactions, followed by retro-Diels-Alder (rDA) reactions and elimination of water. An acid was required for both ihDA and rDA reactions. This mechanism was further verified by comparing the relative reactivity of aldehydes/ketones and their corresponding vinyl ethers in the current reaction system.
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Affiliation(s)
- Kai Yang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The College of Chemistry and The School of Pharmaceutical Sciences, Jilin University , 1266 Fujin Rd., Changchun, Jilin 130021, P. R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The College of Chemistry and The School of Pharmaceutical Sciences, Jilin University , 1266 Fujin Rd., Changchun, Jilin 130021, P. R. China
| | - Pei-Jun Cai
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China
| | - Yang Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The College of Chemistry and The School of Pharmaceutical Sciences, Jilin University , 1266 Fujin Rd., Changchun, Jilin 130021, P. R. China
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Cai C, Zhang H, Ou Y, Jiang Y, Zhong D, Qi H, Dang Q. Saikosaponin-d suppresses cell growth in renal cell carcinoma through EGFR/p38 signaling pathway. Neoplasma 2017; 64:518-525. [DOI: 10.4149/neo_2017_405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Xiang J, Zhu T, Dang Q, Bai X. Electronic Effects on the cis/trans Selectivity in Formation of Isoxazolidine-Fused Eight-Membered Ring via an Intramolecular Nitrone-Alkene Cycloaddition. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1938-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Girijavallabhan V, Arasappan A, Bennett F, Chen K, Dang Q, Huang Y, Kerekes A, Nair L, Pissarnitski D, Verma V, Alvarez C, Chen P, Cole D, Esposite S, Huang Y, Hong Q, Liu Z, Pan W, Pu H, Rossman R, Truong Q, Vibulbhan B, Wang J, Zhao Z, Olsen D, Stamford A, Bogen S, Njoroge FG. 2'-Modified Guanosine Analogs for the Treatment of HCV. Nucleosides Nucleotides Nucleic Acids 2016; 35:277-94. [PMID: 27104963 DOI: 10.1080/15257770.2016.1154968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Novel 2'-modified guanosine nucleosides were synthesized from inexpensive starting materials in 7-10 steps via hydroazidation or hydrocyanation reactions of the corresponding 2'-olefin. The antiviral effectiveness of the guanosine nucleosides was evaluated by converting them to the corresponding 5'-O-triphosphates (compounds 38-44) and testing their biochemical inhibitory activity against the wild-type NS5B polymerase.
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Affiliation(s)
| | | | - Frank Bennett
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Kevin Chen
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Qun Dang
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Ying Huang
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Angela Kerekes
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Latha Nair
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | | | - Vishal Verma
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Carmen Alvarez
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Ping Chen
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - David Cole
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Sara Esposite
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Yuhua Huang
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Qingmei Hong
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Zhidan Liu
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Weidong Pan
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Haiyan Pu
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | | | - Quang Truong
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | | | - Jun Wang
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - Zhiqiang Zhao
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | - David Olsen
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
| | | | - Stephane Bogen
- a Merck Research Laboratories , Kenilworth , NJ 07033 , USA
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Wang QM, Liu HL, Dang Q. Acute trophoblastic pulmonary embolism during conservative treatment of placenta accreta: case report and review of literature. Eur J Med Res 2015; 20:91. [PMID: 26572917 PMCID: PMC4647333 DOI: 10.1186/s40001-015-0185-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 10/15/2015] [Indexed: 11/10/2022] Open
Abstract
Background Placenta accreta is a rare obstetric condition but can lead to life-threatening complications that was mainly diagnosed in the third trimester. We present a case of acute trophoblastic pulmonary embolism (PE) during conservative treatment of placenta accreta. Case presentation A 24-year-old patient who delivered vaginally at 40+4 weeks gestation. The placenta was retained despite the use of oxytocics and attempts of manual removal. Conservative management including uterine arteria embolism, hysteroscopic resection and mifepristone was used but failed and finally the patient died from acute trophoblastic PE and allergic shock when infusing povidone-iodine into her uterine cavity. Conclusion Although conservative treatment of placenta accreta can retain reproductive potential and trophoblastic PE is rare, clinicians should consider hysterectomy when conservative treatment failed and infusion of povidone-iodine or other liquid into the cavity should be prohibited.
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Affiliation(s)
- Qiu-Ming Wang
- Department of Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| | - Hui-Li Liu
- Department of Gynecology, Henan Provincial People's Hospital, Zhengzhou, 450000, China.
| | - Qun Dang
- Department of Gynecology, Henan Provincial People's Hospital, Zhengzhou, 450000, China.
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Zhao D, Dang Q, Haak M, Middeldorp J, Klumper F, Oepkes D, Lopriore E. ‘Superficial’ anastomoses in monochorionic placentas are not always superficial. Placenta 2015; 36:1059-61. [DOI: 10.1016/j.placenta.2015.07.127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 07/17/2015] [Accepted: 07/21/2015] [Indexed: 10/23/2022]
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Xiang J, Xie H, Li Z, Dang Q, Bai X. Stereoselective Synthesis of 3-Carboxy-4,5-dihydropyrroles via an Intramolecular Iminium Ion Cyclization Reaction. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01787] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jinbao Xiang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical
Sciences and The College of Chemistry, Jilin University, 1266 Fujin
Road, Changchun, Jilin 130021, P. R. China
| | - Hongxiang Xie
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical
Sciences and The College of Chemistry, Jilin University, 1266 Fujin
Road, Changchun, Jilin 130021, P. R. China
| | - Zhuo Li
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical
Sciences and The College of Chemistry, Jilin University, 1266 Fujin
Road, Changchun, Jilin 130021, P. R. China
| | - Qun Dang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical
Sciences and The College of Chemistry, Jilin University, 1266 Fujin
Road, Changchun, Jilin 130021, P. R. China
| | - Xu Bai
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical
Sciences and The College of Chemistry, Jilin University, 1266 Fujin
Road, Changchun, Jilin 130021, P. R. China
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Yang K, Yang Z, Dang Q, Bai X. Hydrazones as Productive Dienophiles in the Inverse Electron Demand Diels-Alder Reactions of 1,3,5-Triazines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500499] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Lyu H, Liu Y, Dang Q, Chen H, Chen R. [Effect of bazedoxifene on endometriosis in a rat model]. Zhonghua Fu Chan Ke Za Zhi 2015; 50:291-295. [PMID: 26080942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the therapeutic mechanism of bazedoxifene, the third-generation selective ER modulator (SERM), on endometriosis lesions in a rat model. METHODS Endometriosis was induced by transplanting pieces of endometrium from other syngeneic rats that were as donors onto the subcutaneous of other unmated female rats. The rats with successful ectopic implants were divided into two groups: control group (n=10) and bazedoxifene group (n=10). The macroscopic morphology, volume, histopathology of ectopic implant and rats uterine wet weight were determined before and after the treatment. Expression of proliferation cell nuclear antigen (PCNA), ER and PR in the eutopic endometrium and endometriosis lesions detected by immunohistochemistry in the two groups. RESULTS (1) The gross morphology and histological changes of endometriosis lesions in rats after treatment: compared with the control group, it was obviously depauperated and had more less glands and blood vessels in the stroma. (2) The change of rats' weight, the volume of endometriosis lesion before and after treatment and rats uterine wet weigh after treatment respectively in the control group and the bazedoxifene group: rats' weight were respectively before treatment: (201±17) g, (202±18) g, that were respectively after treatment: (266±16) g, (261±16) g, which showed no significant difference between two groups before and after treatment (P>0.05). The volume of ectopic implant before treatment were respectively (85±17) mm3, (85±12) mm3, and showed no significant difference between two groups; that were respectively (48±11) mm3, (24±9) mm3 afte rtreatment, which was significantly decreased compared with the control group (P<0.05). Rats uterine wet weight after treatment were respectively: (0.77±0.16) g, (0.45±0.18) g, and was significantly reduced compared with the control group (P<0.05). (3) The protein expression levels of PCNA, ER and PR in the endometriosis lesions after treatment were respectively 0.282±0.044, 0.51±0.06, 0.49±0.05 in the control group, 0.191±0.020, 0.23±0.03, 0.48±0.06 in the bazedoxifene group; that in eutopic endometrium were respectively 0.369±0.081, 0.56±0.08, 0.56±0.10 in the control group, 0.211±0.037, 0.27±0.05, 0.54±0.08 in the bazedoxifene group; the protein expression levels of PCNA and ER in endometriosis lesions and the eutopic endometrium were significantly decreased in the bazedoxifene group compared with the control group (P<0.05), but the protein levels of PR in endometriosis lesionsand and the eutopic endometrium were not significantly altered by treatment (P>0.05). CONCLUSION Bazedoxifene could obviously reduce the size of endometriosis lesions, the mechanism may be related with suppressing estrogen-induced proliferation, the expression of ER and direct ER antagonism by this SERM.
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Affiliation(s)
- Huijuan Lyu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - Yuling Liu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China;
| | - Qun Dang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - Hui Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - Ruihong Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
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Zhang Y, Zheng L, Yang F, Zhang Z, Dang Q, Bai X. Substituent-directed reduction of cyclic aminals leading to two different heterocycles selectively: syntheses of functionalized nicotines and pyrido[2,3-b]azepines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Walji AM, Sanchez RI, Clas SD, Nofsinger R, de Lera Ruiz M, Li J, Bennet A, John C, Bennett DJ, Sanders JM, Di Marco CN, Kim SH, Balsells J, Ceglia SS, Dang Q, Manser K, Nissley B, Wai JS, Hafey M, Wang J, Chessen G, Templeton A, Higgins J, Smith R, Wu Y, Grobler J, Coleman PJ. Cover Picture: Discovery of MK-8970: An Acetal Carbonate Prodrug of Raltegravir with Enhanced Colonic Absorption (ChemMedChem 2/2015). ChemMedChem 2015. [DOI: 10.1002/cmdc.201590000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bai X, Zhu T, Xiang J, Liu Z, Dang Q. Synthesis of Isoxazolidine-Fused Eight-Membered Heterocycles via an Intramolecular Nitrone–Alkene Cycloaddition. Synlett 2014. [DOI: 10.1055/s-0034-1379602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Walji AM, Sanchez RI, Clas SD, Nofsinger R, de Lera Ruiz M, Li J, Bennet A, John C, Bennett DJ, Sanders JM, Di Marco CN, Kim SH, Balsells J, Ceglia SS, Dang Q, Manser K, Nissley B, Wai JS, Hafey M, Wang J, Chessen G, Templeton A, Higgins J, Smith R, Wu Y, Grobler J, Coleman PJ. Discovery of MK-8970: An Acetal Carbonate Prodrug of Raltegravir with Enhanced Colonic Absorption. ChemMedChem 2014; 10:245-52. [DOI: 10.1002/cmdc.201402393] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Indexed: 11/10/2022]
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Zhang Y, Yang F, Zheng L, Dang Q, Bai X. A Cascade of Acid-Promoted C–O Bond Cleavage and Redox Reactions: From Oxa-Bridged Benzazepines to Benzazepinones. Org Lett 2014; 16:6041-3. [PMID: 25397583 DOI: 10.1021/ol502971e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yuewei Zhang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Fengzhi Yang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Lianyou Zheng
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Qun Dang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Xu Bai
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
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Wong T, MacLennan G, Dang Q, McCune K, Rengan R. Evaluation of Treatment Plan Robustness With Adaptive Re-planning for Recurrent Lung Cancer Patients Treated With Protons. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dang Q, Zhang Z, Chen T, Tang B, He X, He S, Song Y, Bogen S, Girijavallabhan V, Olsen DB, Meinke PT. Syntheses of 1′,2′-cyclopentyl nucleosides as potential antiviral agents. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Richard P, Sandison G, Chapman E, Dang Q, Johnson B, Wong T, Parvathaneni U. Phantom Analysis of Dental Filling Materials: Impact on Head and Neck Tumor Visualization and Proton Beam Dosimetry. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dang Q, Zhang Z, Tang B, Song Y, Wu L, Chen T, Bogen S, Girijavallabhan V, Olsen DB, Meinke PT. Syntheses of nucleosides with 2′-spirolactam and 2′-spiropyrrolidine moieties as potential inhibitors of hepatitis C virus NS5B polymerase. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Li YJ, Hyun MH, Rha SW, Chen KY, Jin Z, Dang Q, Park CM, Lee JE, Park JY, Choi CU, Na JO, Lim HE, Kim JW, Kim EJ, Park CG, Seo HS, Oh DJ. Diabetes mellitus is not a risk factor for coronary artery spasm as assessed by an intracoronary acetylcholine provocation test: angiographic and clinical characteristics of 986 patients. J Invasive Cardiol 2014; 26:234-239. [PMID: 24907077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES Both diabetes mellitus (DM) and coronary artery spasm (CAS) are associated with endothelial dysfunction. Thus, a higher incidence of CAS is expected in diabetic patients (pts). We evaluated the impacts of DM and the status of blood sugar control on CAS with intracoronary acetylcholine (ACh) provocation test. METHODS A total of 986 pts (106 DM vs 880 non-DM pts) with angiographically normal coronary artery received ACh provocation test. Significant CAS was defined as a transient >90% luminal narrowing with concurrent chest pain and/ or ST-segment changes. HbA1c <7% was considered a controlled blood sugar level. RESULTS The incidence of CAS was similar between patients with versus without DM (30.2% vs 23.5%; P=.13). Multivariable analysis showed that DM was not an independent risk factor for significant CAS (odds ratio [OR], 1.29; 95% confidence interval [CI], 0.81-2.07; P=.28). The angiographic characteristics of CAS were also similar between these two groups. Subgroup analysis regarding the impact of the status of blood sugar control on CAS showed that the incidence of CAS was similar between diabetic pts with versus without controlled blood sugar levels (35.4% vs 25.9%; P=.29). Multivariable analysis showed that the uncontrolled blood sugar level was not an independent risk factor for CAS (OR, 0.79; 95% CI, 0.29-2.13; P=.64). CONCLUSIONS Despite the expected endothelial dysfunction, DM and the status of blood sugar control are not associated with CAS, suggesting the existence of different mechanisms for CAS and coronary artery disease.
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Affiliation(s)
- Yong-Jian Li
- Cardiovascular Center, Korea University Guro Hospital, 80, Guro-dong, Guro-gu, Seoul, 152-703, Korea.
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Zhang Y, Zhu Y, Zheng L, Zhuo LG, Yang F, Dang Q, Yu ZX, Bai X. On-Demand Selection of the Reaction Path from Imino Diels-Alder to Ene-Type Cyclization: Synthesis of Epiminopyrimido[4,5-b]azepines. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yang K, Xiang J, Bao G, Dang Q, Bai X. Synthesis of highly substituted 4H-pyrido[1,2-a]pyrimidines via a one-pot three-component condensation reaction. ACS Comb Sci 2013; 15:519-24. [PMID: 23914724 DOI: 10.1021/co400086u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot three-component reaction, involving condensation of 2-aminopyridines, aldehydes, and ketones/aldehydes under trifluoromethanesulfonic acid catalysis, provides rapid access to highly substituted novel 4H-pyrido[1,2-a]pyrimidines.
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Affiliation(s)
- Kai Yang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Jinbao Xiang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Guochen Bao
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Qun Dang
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
| | - Xu Bai
- The Center
for Combinatorial Chemistry and Drug Discovery,
The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin
130021, P. R. China
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He S, Li P, Dai X, McComas CC, Huang H, Zhan C, Chang L, Liu Y, Chen S, Lai Z, Liu H, Yin J, Dang Q, Xiao D, Zorn N, Peng X, Nargund RP, Palani A. A general approach to substituted 6H-pyrido[2′,3′:5,6] [1,3]oxazino[3,4-a]indole via cyclization from an indoline precursor followed by re-aromatization. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dang Q, Bai X, Xu G, Zheng L. Total Synthesis of 4-Azaeudistomin Y1 and Analogues by Inverse-ElectronDemand Diels-Alder Reactions of 3-Aminoindoles with 1,3,5-Triazines. SYNTHESIS-STUTTGART 2013. [DOI: 10.1055/s-0032-1316857] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dang Q, Li YJ, Gao L, Jin Z, Gou LX. Six-month angiographic and one-year clinical outcomes of polymer free paclitaxel-eluting stent in patients with ST-segment elevation myocardial infarction: a comparison with permanent polymer sirolimus-eluting stent. Chin Med J (Engl) 2012; 125:3393-3397. [PMID: 23044294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND Since permanent polymer is implicated in adverse events associated with delayed vessel healing after drug eluting stents (DES) implantation, great efforts have been made to develop more biocompatible DES with biodegradable polymer or without polymer. The present study aimed to evaluate the safety and efficacy of polymer free paclitaxel-eluting stents (PF-PES) in comparison with permanent polymer sirolimus-eluting stents (PP-SES) in patients with acute ST-segment elevation myocardial infarction (STEMI). METHODS Patients with STEMI were randomly assigned to receive PP-SES (n = 55), and PF-PES (n = 50). The 6-month angiographic and 1-year clinical outcomes were compared between the two groups. Target lesion failure (TLF) was defined as the composite of cardiac death, recurrent nonfatal myocardial infarction (Re-MI), or target lesion revascularization (TLR). RESULTS Follow-up angiography at six months was performed in 72.7% of the PP-SES group and 70.0% of the PF-PES group (P = 0.757). The two groups had comparable angiographic outcomes including minimal luminal diameter, diameter stenosis, late loss and binary restenosis. All patients were clinically followed up to one year. The two groups had similar clinical outcomes with relatively low rates of target lesion failure (10.9% PP-SES vs. 12.0% PF-PES, P = 0.861) and definite or probable stent thrombosis (1.8% PP-SES vs. 2.0% PF-PES, P = 1.000) at one year. CONCLUSIONS The present study suggests that the safety and efficacy of PF-PES in the setting of STEMI are comparable to PP-SES. Further randomized trials with larger study populations are needed to get definite conclusions.
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Affiliation(s)
- Qun Dang
- Department of Cardiology, Tianjin Nankai Hospital, Tianjin 300100, China.
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Li YJ, Rha SW, Chen KY, Dang Q, Elnagar A, Choi BG, Im SI, Kim S, Na JO, Han S, Choi CU, Lim HE, Kim JW, Kim EJ, Seo HS, Park CG, Oh DJ, Jeong MH. ONE-YEAR OUTCOMES AFTER THE UNRESTRICTED USE OF SIROLIMUS- VERSUS PACLITAXEL-ELUTING STENTS IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60031-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Dang Q, Bai X, Xie H, Xiang J. A Highly Stereocontrolled Intramolecular Cycloaddition Reaction of Azomethine Ylide Activated by a Pyrimidine Ring: Access to Novel Tricyclic Hexahydro-1H-pyrrolo[2′,3′:4,5]pyrido[2,3-d]pyrimidines. Synlett 2012. [DOI: 10.1055/s-0031-1290333] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Dang Q, Kasibthatla SR, Jiang T, Taplin F, Gibson T, Potter SC, van Poelje PD, Erion MD. Oxazole
phosphonic acids as fructose 1,6-bisphosphatase inhibitors with potent glucose-lowering activity. Med Chem Commun 2011. [DOI: 10.1039/c0md00269k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphonic acid-containing oxazoles were discovered as potent inhibitors of fructose 1,6-bisphosphatase. Several oxazoles demonstrated significant glucose-lowering activity in rats after intravenous dosing.
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Affiliation(s)
- Qun Dang
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | | | - Tao Jiang
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | - Frank Taplin
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | - Tony Gibson
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | - Scott C. Potter
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | - Paul D. van Poelje
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
| | - Mark D. Erion
- Departments of Chemistry and Biochemistry
- Metabasis Therapeutics, Inc
- La Jolla
- USA
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Gómez-Galeno JE, Dang Q, Nguyen TH, Boyer SH, Grote MP, Sun Z, Chen M, Craigo WA, van Poelje PD, MacKenna DA, Cable EE, Rolzin PA, Finn PD, Chi B, Linemeyer DL, Hecker SJ, Erion MD. A Potent and Selective AMPK Activator That Inhibits de Novo Lipogenesis. ACS Med Chem Lett 2010; 1:478-82. [PMID: 24900234 DOI: 10.1021/ml100143q] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Accepted: 08/23/2010] [Indexed: 12/22/2022] Open
Abstract
AMP-activated protein kinase (AMPK) is a heterotrimeric kinase that regulates cellular energy metabolism by affecting energy-consuming pathways such as de novo lipid biosynthesis and glucose production as well as energy-producing pathways such as lipid oxidation and glucose uptake. Accordingly, compounds that activate AMPK represent potential drug candidates for the treatment of hyperlipidemia and type 2 diabetes. Screening of a proprietary library of AMP mimetics identified the phosphonic acid 2 that bears little structural resemblance to AMP but is capable of activating AMPK with high potency (EC50 = 6 nM vs AMP EC50 = 6 μM) and specificity. Phosphonate prodrugs of 2 inhibited de novo lipogenesis in cellular and animal models of hyperlipidemia.
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Affiliation(s)
| | - Qun Dang
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | | | - Serge H. Boyer
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | | | - Zhili Sun
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | - Mingwei Chen
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | | | | | | | | | - Paul A. Rolzin
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | | | - Bert Chi
- Metabasis Therapeutics, Inc., La Jolla, California 92037
| | | | | | - Mark D. Erion
- Metabasis Therapeutics, Inc., La Jolla, California 92037
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38
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Dang Q, Liu Y, Cashion DK, Kasibhatla SR, Jiang T, Taplin F, Jacintho JD, Li H, Sun Z, Fan Y, DaRe J, Tian F, Li W, Gibson T, Lemus R, van Poelje PD, Potter SC, Erion MD. Discovery of a series of phosphonic acid-containing thiazoles and orally bioavailable diamide prodrugs that lower glucose in diabetic animals through inhibition of fructose-1,6-bisphosphatase. J Med Chem 2010; 54:153-65. [PMID: 21126019 DOI: 10.1021/jm101035x] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oral delivery of previously disclosed purine and benzimidazole fructose-1,6-bisphosphatase (FBPase) inhibitors via prodrugs failed, which was likely due to their high molecular weight (>600). Therefore, a smaller scaffold was desired, and a series of phosphonic acid-containing thiazoles, which exhibited high potency against human liver FBPase (IC(50) of 10-30 nM) and high selectivity relative to other 5'-adenosinemonophosphate (AMP)-binding enzymes, were discovered using a structure-guided drug design approach. The initial lead compound (30j) produced profound glucose lowering in rodent models of type 2 diabetes mellitus (T2DM) after parenteral administration. Various phosphonate prodrugs were explored without success, until a novel phosphonic diamide prodrug approach was implemented, which delivered compound 30j with good oral bioavailability (OBAV) (22-47%). Extensive lead optimization of both the thiazole FBPase inhibitors and their prodrugs culminated in the discovery of compound 35n (MB06322) as the first oral FBPase inhibitor advancing to human clinical trials as a potential treatment for T2DM.
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Affiliation(s)
- Qun Dang
- Department of Medicinal Chemistry, Metabasis Therapeutics, Inc., La Jolla, California 92037, United States.
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39
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Xiang J, Zhu T, Dang Q, Bai X. Stereochemistry as a Tool in Deciphering the Processes of a Tandem Iminium Cyclization and Smiles Rearrangement. J Org Chem 2010; 75:8147-54. [DOI: 10.1021/jo101798p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Tong Zhu
- The Center for Combinatorial Chemistry and Drug Discovery, The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery, The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery, The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
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40
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Abstract
Practical and efficient methods have been developed for the synthesis of 4,6,8,9-tetrasubstituted 8,9-dihydro-5H-pyrimido[4,5-e][1,4]diazepin-7(6H)-ones from 4,6-dicholoropyrimidine aldehyde, N-substituted amino acid esters, and amines in five steps. This synthetic strategy is based on suitably substituted pyrimidines as bis-electrophilic species reacting with various amines to construct the pyrimido[4,5-e][1,4]diazepine core with a strategically anchored functional group for further derivatization. The utility of this methodology was demonstrated through the preparation of a 33-membered library of representative 8,9-dihydro-5H-pyrimido[4,5-e][1,4]diazepin-7(6H)-ones in good to excellent yields.
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Affiliation(s)
- Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, The School of Pharmaceutical Sciences and The College of Chemistry, Jilin University, Changchun, Jilin, PR China
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41
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Xiang J, Zheng L, Zhu T, Dang Q, Bai X. Synthesis of novel tricyclic 4-chloro-7,8,10,11-tetrahydro-5H-benzo[e]pyrimido[4,5-b][1,4]diazepin-9(6H)-ones. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Yang F, Zheng L, Xiang J, Dang Q, Bai X. Synthesis of Hexahydrobenzo[b]pyrimido[4,5-h][1,6]naphthyridines via an Intramolecular Hetero-Diels−Alder Reaction. ACTA ACUST UNITED AC 2010; 12:476-81. [DOI: 10.1021/cc100018b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Fengzhi Yang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Lianyou Zheng
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery, School of Pharmaceutical Sciences and College of Chemistry, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
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43
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Li YJ, Rha SW, Chen KY, Jin Z, Minami Y, Wang L, Dang Q, Poddar KL, Ramasamy S, Park JY, Oh DJ, Jeong MH. Clinical characteristics and mid-term outcomes of acute myocardial infarction patients with prior cerebrovascular disease in an Asian population: Lessons from the Korea Acute Myocardial Infarction Registry. Clin Exp Pharmacol Physiol 2010; 37:581-6. [DOI: 10.1111/j.1440-1681.2010.05363.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Dang Q, Kasibhatla SR, Xiao W, Liu Y, Dare J, Taplin F, Reddy KR, Scarlato GR, Gibson T, van Poelje PD, Potter SC, Erion MD. Fructose-1,6-bisphosphatase Inhibitors. 2. Design, synthesis, and structure-activity relationship of a series of phosphonic acid containing benzimidazoles that function as 5'-adenosinemonophosphate (AMP) mimics. J Med Chem 2010; 53:441-51. [PMID: 20055427 DOI: 10.1021/jm901420x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Efforts to enhance the inhibitory potency of the initial purine series of fructose-1,6-bisphosphatase (FBPase) inhibitors led to the discovery of a series of benzimidazole analogues with human FBPase IC(50)s < 100 nM. Inhibitor 4.4 emerged as a lead compound based on its potent inhibition of human liver FBPase (IC(50) = 55 nM) and significant glucose lowering in normal fasted rats. Intravenous administration of 4.4 to Zucker diabetic fatty rats led to rapid and robust glucose lowering, thereby providing the first evidence that FBPase inhibitors could improve glycemia in animal models of type 2 diabetes.
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Affiliation(s)
- Qun Dang
- Department of Medicinal Chemistry, Metabasis Therapeutics, Inc., 11119 North Torrey Pines Road, La Jolla, California 92037, USA.
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45
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Xu G, Zheng L, Wang S, Dang Q, Bai X. Synthesis of Electron-Deficient 1,3,5-Triazines as Potential Azadienes for Inverse-Electron-Demand Diels–Alder Reactions. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910902978031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Guoxing Xu
- a The Center for Combinatorial Chemistry and Drug Discovery, College of Chemistry and School of Pharmaceutical Sciences, Jilin University , Changchun, China
| | - Lianyou Zheng
- a The Center for Combinatorial Chemistry and Drug Discovery, College of Chemistry and School of Pharmaceutical Sciences, Jilin University , Changchun, China
| | - Shixue Wang
- a The Center for Combinatorial Chemistry and Drug Discovery, College of Chemistry and School of Pharmaceutical Sciences, Jilin University , Changchun, China
| | - Qun Dang
- a The Center for Combinatorial Chemistry and Drug Discovery, College of Chemistry and School of Pharmaceutical Sciences, Jilin University , Changchun, China
| | - Xu Bai
- a The Center for Combinatorial Chemistry and Drug Discovery, College of Chemistry and School of Pharmaceutical Sciences, Jilin University , Changchun, China
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46
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Abstract
The impact of highly active antiretroviral therapy (HAART) on progression to end-stage liver disease (ESLD) in human immunodeficiency virus (HIV)/hepatitis C virus (HCV) co-infection remains controversial. We studied 157 HCV+ haemophilic men (85 HIV+ and 72 HIV-), on whom dates of HIV and HCV seroconversion and clinical outcomes were known. Time to ESLD was determined by Kaplan-Meier product-limit methods and risk factors for ESLD progression were analysed by a Cox proportional hazards model. Among HIV+ men, ESLD was more common, 17 of 85 (20.0%) than in HIV-, eight of 72 (11.1%) and median ESLD-free survival significantly shorter, P = 0.009, hazard ratio 3.00 [95% confidence interval (CI): 1.27-7.08]. HAART treated HIV+ had longer ESLD-free survival than HIV+ untreated, 30.3 vs. 20.0 years, P = 0.043, hazard ratio, 3.14 (95% CI: 1.27-7.08), comparable with survival in HIV- men, P = 0.13, hazard ratio 2.20 (95% CI: 0.76-2.35). Progression was unrelated to HAART toxicity (n = 0) or HCV antiviral therapy (n = 7). HIV+ HAART Rx and HIV- did not differ in HCV duration, age at ESLD, age at death or present, overall or AIDS mortality, all P > 0.05. These data suggest that HAART improves ESLD-free survival, approaching that in HIV- men.
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Affiliation(s)
- M V Ragni
- Department of Medicine, Division Hematology/Oncology, University of Pittsburgh Medicine Center, Pittsburgh, PA 15213-4306, USA.
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47
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Dang Q, Liu Y. An efficient entry to furo[2,3-d]pyrimidines via inverse electron demand Diels–Alder reactions of 2-aminofurans with 1,3,5-triazines. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Dang Q, Bai X, Xu G, Zheng L, Wang S. Regiospecific Syntheses of 3-Aza-α-carbolines via Inverse Electron-Demand Diels-Alder Reactions of 2-Aminoindoles with 1,3,5-Triazines. Synlett 2009. [DOI: 10.1055/s-0029-1218345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Wei Z, Zheng L, Dang Q, Bai X. An efficient method to prepare 4-aminoquinazolines: Potential application to conformation-restricted bleomycin analogs. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.238] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Dang Q, Brown BS, Liu Y, Rydzewski RM, Robinson ED, van Poelje PD, Reddy MR, Erion MD. Fructose-1,6-bisphosphatase inhibitors. 1. Purine phosphonic acids as novel AMP mimics. J Med Chem 2009; 52:2880-98. [PMID: 19348494 DOI: 10.1021/jm900078f] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Inhibition of FBPase is considered a promising way to reduce hepatic gluconeogenesis and therefore could be a potential approach to treat type 2 diabetes. Herein we report the discovery of a series of purine phosphonic acids as AMP mimics targeting the AMP site of FBPase, which was achieved using a structure-guided drug design approach. These non-nucleotide purine analogues inhibit FBPase in a similar manner and with similar potency as AMP. More importantly, several purine analogues exhibited potent cellular and in vivo glucose-lowering activities, thus achieving proof-of-concept for inhibiting FBPase as a drug discovery target. For example, compounds 4.11 and 4.13 are as equipotent as AMP with regard to FBPase inhibition. Furthermore, compound 4.11 inhibited glucose production in primary rat hepatocytes and significantly lowered blood glucose levels in fasted rats.
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Affiliation(s)
- Qun Dang
- Department of Medicinal Chemistry, Metabasis Therapeutics, Inc., 11119 North Torrey Pines Road, La Jolla, California 92037, USA.
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