51
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Yuan CM, Tang GH, Wang XY, Zhang Y, Cao MM, Li XH, Li Y, Li SL, Di YT, He HP, Hao XJ, Hua HM. New steroids and sesquiterpene from Turraea pubescens. Fitoterapia 2013; 90:119-25. [DOI: 10.1016/j.fitote.2013.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 07/02/2013] [Accepted: 07/06/2013] [Indexed: 12/01/2022]
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52
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Li SF, Zhang Y, Huang N, Zheng YT, Di YT, Li SL, Cheng YY, He HP, Hao XJ. Daphnane diterpenoids from the stems of Trigonostemon lii and their anti-HIV-1 activity. PHYTOCHEMISTRY 2013; 93:216-221. [PMID: 23628626 DOI: 10.1016/j.phytochem.2013.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 10/20/2012] [Accepted: 03/04/2013] [Indexed: 06/02/2023]
Abstract
Thirteen highly oxygenated daphnane diterpenoids, including six known compounds, were isolated from the stems of Trigonostemon lii. The structures were elucidated by extensive spectroscopic analyses including 2D NMR spectroscopy (HSQC, (1)H-(1)H COSY, HMBC, and ROESY) and mass spectrometry. The absolute stereochemistries of compounds were established on the basis of CD spectra. Four of the compounds showed modest anti-HIV-1 activity (EC50=2.04, 9.17, 11.42, and 9.05 μg/ml, TI=26.49, >21.81, 9.32, and 9.56, respectively) in vitro.
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Yuan CM, Tang GH, Zhang Y, Wang XY, Cao MM, Guo F, Li Y, Di YT, Li SL, Hua HM, He HP, Hao XJ. Bioactive limonoid and triterpenoid constituents of Turraea pubescens. JOURNAL OF NATURAL PRODUCTS 2013; 76:1166-1174. [PMID: 23734701 DOI: 10.1021/np400276q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Eleven new limonoids, turrapubins A-K (1-11), and three new triterpenoids (12-14), along with 14 known compounds, were isolated from the twigs of Turraea pubescens. The structures of 1-14 were elucidated on the basis of NMR and MS analysis. Compounds 12, 16, 18, and 19 exhibited inhibitory activities against lipopolysaccharide-induced nitric oxide production in RAW264.7 cells. In addition, compounds 2, 11, 18, and 26 exhibited inhibitory activities against brine shrimp larvae (Artemia salina) at 100 ppm with the corrected mortality ranging from 81.7% to 100%.
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54
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Cao MM, Wang L, Zhang Y, He HP, Gu YC, Zhang Q, Li Y, Yuan CM, Li SL, Di YT, Hao XJ. Daphmacromines K-O, alkaloids from Daphniphyllum macropodum. Fitoterapia 2013; 89:205-9. [PMID: 23756191 DOI: 10.1016/j.fitote.2013.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 06/02/2013] [Indexed: 11/18/2022]
Abstract
Five new yuzurimine-type Daphniphyllum alkaloids, daphmacromines K-O (1-5), were isolated from the leaves and stems of Daphniphyllum macropodum. Their structures were elucidated by extensive spectroscopic techniques, including 2D NMR spectroscopy and mass spectrometry. Daphmacromine O (5) showed moderate cytotoxic activity against brine shrimp.
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Yuan CM, Zhang Y, Tang GH, Di YT, Cao MM, Wang XY, Zuo GY, Li SL, Hua HM, He HP, Hao XJ. Khayseneganins A-H, limonoids from Khaya senegalensis. JOURNAL OF NATURAL PRODUCTS 2013; 76:327-333. [PMID: 23210623 DOI: 10.1021/np3006919] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Eight new limonoids, khayseneganins A-H (1-8), and 31 known limonoids were isolated from the leaves and twigs of Khaya senegalensis. The structures of the new compounds were elucidated by 2D-NMR spectroscopy and mass spectrometry, and the absolute configuration of 1 was determined by the CD exciton chirality method. Compounds 9, 10, 12, and 15 showed antimicrobial activities against Pseudomonas aeruginosa, MRSA 92(#), and MRSA 98(#), all with a MIC value of 12.5 μg/mL.
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56
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Chen DZ, Jiang JD, Zhang KQ, He HP, Di YT, Zhang Y, Cai JY, Wang L, Li SL, Yi P, Peng ZG, Hao XJ. Evaluation of anti-HCV activity and SAR study of (+)-lycoricidine through targeting of host heat-stress cognate 70 (Hsc70). Bioorg Med Chem Lett 2013; 23:2679-82. [PMID: 23511018 DOI: 10.1016/j.bmcl.2013.02.089] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 02/15/2013] [Accepted: 02/20/2013] [Indexed: 12/17/2022]
Abstract
The anti hepatitis C virus (HCV) activity of (+)-lycoricidine (1) was evaluated for the first time in this letter, yielding an EC50 value of 0.55 nmol/mL and an selection index (SI) value of 12.72. Further studies indicated that 1 induced this effect by down-regulating host heat-stress cognate 70 (Hsc70) expression. In addition, 20 derivatives were designed and synthesised to investigate the basic structure-activity relationship (SAR) of the title compound. Several of these derivatives exhibit a good inhibition of HCV, such as compound 3 (EC50=0.68 nmol/mL, SI=33.86), compound 2d (EC50=15 nmol/mL, SI=12) and compound 5 (EC50=33 nmol/mL, SI >10.91). Meanwhile, the experimental data suggest that the modification of certain groups of (+)-lycoricidine can reduce the cytotoxicity of the compounds.
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57
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Cao MM, He HP, Gu YC, Zhang Q, Li XN, Zuo GY, Di YT, Yuan CM, Li SL, Zhang Y, Hao XJ. Daphmacrodins A and B, alkaloids from Daphniphyllum macropodum. NATURAL PRODUCTS AND BIOPROSPECTING 2013. [PMCID: PMC4131615 DOI: 10.1007/s13659-012-0095-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Two new daphnicyclidin-type Daphniphyllum alkaloids, daphmacrodins A and B (1 and 2) were isolated from the leaves and stems of Daphniphyllum macropodum. Their structures were elucidated by extensive spectroscopic techniques, including 2D NMR spectroscopy and mass spectrometry. The relative configuration of 1 was further confirmed by a single-crystal X-ray diffraction analysis. Their cytotoxic activities against five human cancer cell lines, pesticidal activities against brine shrimp (Artemia salina), and antibacterial activities against five standard bacterial and fungal strains were evaluated. The structure of 1 was successfully transformed to 2 by a chemical method. ![]()
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58
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Huang SD, Zhang Y, Cao MM, Di YT, Tang GH, Peng ZG, Jiang JD, He HP, Hao XJ. Myriberine A, a new alkaloid with an unprecedented heteropentacyclic skeleton from Myrioneuron faberi. Org Lett 2013; 15:590-3. [PMID: 23320525 DOI: 10.1021/ol3034065] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Myriberine A (1) possessing an unprecedented carbon skeleton was isolated from Myrioneuron faberi. The structure and absolute configuration of 1 were elucidated by a combination of spectroscopic data, X-ray crystallographic, and computational methods. Myriberine A (1) demonstrated inhibition against the hepatitis C virus (HCV) life cycle in vitro.
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59
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Yuan CM, Zhang Y, Tang GH, Li Y, He HP, Li SF, Hou L, Li XY, Di YT, Li SL, Hua HM, Hao XJ. Cytotoxic limonoids from Melia azedarach. PLANTA MEDICA 2013; 79:163-168. [PMID: 23250810 DOI: 10.1055/s-0032-1328069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Five new compounds (1-5), including two limonoids, one triterpenoid, one steroid, and one sesquiterpenoid, along with nine known limonoids (6-14), were isolated from the bark of Melia azedarach. The structures of the new compounds were elucidated by 2D NMR spectroscopy and mass spectrometry. The isolated compounds as well as three acetylated derivatives of 9 were evaluated for their cytotoxicities against five human tumor cell lines (HL-60, SMMC-7721, A-549, MCF-7, and SW480) by an MTT assay. Seven limonoids (1, 6, 7, 8, 9, 9b, and 9c) showed significant inhibitory activities against tested cell lines with IC50 values ranging from 0.003 to 0.555 µM, and their preliminary structure-activity relationships are also discussed.
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60
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Zhang Q, Zhang Y, Yang TQ, Di YT, Hao XJ. Longeracemine, an unprecedented C-7/C-9 bonding alkaloid from Daphniphyllum longeracemosum. RSC Adv 2013. [DOI: 10.1039/c3ra41072b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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61
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Tang GH, Zhang Y, Yuan CM, Li Y, Gu YC, Di YT, Wang YH, Zuo GY, Li SF, Li SL, He HP, Hao XJ. Trigohowilols A-G, degraded diterpenoids from the stems of Trigonostemon howii. JOURNAL OF NATURAL PRODUCTS 2012; 75:1962-1966. [PMID: 23148674 DOI: 10.1021/np3006315] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Two new degraded diterpenoids, trigohowilols A (1) and B (2), four new heterodimers, trigohowilols C-F (3-6), one new homodimer, trigohowilol G (7), and three known degraded diterpenoids (8-10) were isolated from the methanol extract of the stems of Trigonostemon howii. Compounds 1-7 were evaluated for their cytotoxic activity against five human tumor cell lines by an MTT assay, and trigohowilols E (5) and F (6) exhibited inhibitory activity with IC50 values ranging from 2.33 to 12.57 μM. Moreover, compounds 1-6 showed weak antimicrobial activities (MIC values: 6.25-25 μg/mL) against Staphylococcus aureus, Pseudomonas aeruginosa, MRSA 92(#), and MRSA 98(#) using a 2-fold dilution method.
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62
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Tang GH, He HP, Gu YC, Di YT, Wang YH, Li SF, Li SL, Zhang Y, Hao XJ. 3,4-seco-Diterpenoids from Trigonostemon flavidus. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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63
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Zhang Q, Zhang Y, He HP, Di YT, Hao XJ. Trichilone, a New C 21 Steroid from Trichilia Connaroides. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200701003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Phytochemical investigation of the leaves of Trichilia connaroides led to the isolation of a new pregnane, trichilone (1), featuring a 2-methoxycyclopent-2-enone moiety, along with a related known compound, 3 β,4 α-dihydroxypregnane-16-one (2). The structure of 1 was established on the basis of extensive spectroscopic analysis. Compound 1 showed significant root-growth inhibition activity against Amaranthus. mangostanus with an IC50 value of 23.1 ppm.
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64
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Zhang Q, Zhang Y, He HP, Di YT, Hao XJ. Trichilone, a new C21 steroid from Trichilia connaroides. Nat Prod Commun 2012; 7:1267-1268. [PMID: 23156985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Phytochemical investigation of the leaves of Trichilia connaroides led to the isolation of a new pregnane, trichilone (1), featuring a 2-methoxycyclopent-2-enone moiety, along with a related known compound, 3beta,4alpha-dihydroxypregnane-16-one (2). The structure of 1 was established on the basis of extensive spectroscopic analysis. Compound 1 showed significant root-growth inhibition activity against Amaranthus. mangostanus with an IC50 value of 23.1 ppm.
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65
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Yuan CM, Zhang Y, Tang GH, Li SL, Di YT, Hou L, Cai JY, Hua HM, He HP, Hao XJ. Senegalensions A-C, Three Limonoids from Khaya senegalensis. Chem Asian J 2012; 7:2024-7. [DOI: 10.1002/asia.201200320] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Indexed: 11/08/2022]
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66
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Zhang Z, Zhang Y, Wang YH, Zhang Q, Yan XH, Di YT, He HP, Hao XJ. Three novel β-carboline alkaloids from Gelsemium elegans. Fitoterapia 2012; 83:704-8. [DOI: 10.1016/j.fitote.2012.02.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 02/19/2012] [Accepted: 02/20/2012] [Indexed: 11/26/2022]
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67
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Tang GH, Zhang Y, Gu YC, Li SF, Di YT, Wang YH, Yang CX, Zuo GY, Li SL, He HP, Hao XJ. Trigoflavidols A-C, degraded diterpenoids with antimicrobial activity, from Trigonostemon flavidus. JOURNAL OF NATURAL PRODUCTS 2012; 75:996-1000. [PMID: 22548480 DOI: 10.1021/np3001128] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Trigoflavidols A (1) and B (2), tetranorditerpenoid dimers possessing a rearrangement skeleton with a spiroketal core moiety, and trigoflavidol C (3), a hexanorditerpenoid, have been isolated from Trigonostemon flavidus along with two known compounds. Compounds 1 and 2 showed moderate antimicrobial activities (MIC values: 3.12-6.25 μg/mL) against Staphylococcus aureus, 8(#)MRSA, and 82(#)MRSA, and 1, 2, and 5 showed weak activities (IC(50) values: 3.75-28.99 μM) against various human tumor cell lines.
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68
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Tan CJ, Wang YH, Di YT, He HP, Mu SZ, Li SF, Zhang Y, Hao XJ. Daphnioldhamine A, a novel alkaloid from Daphniphyllum oldhami. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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69
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Li SF, Di YT, Luo RH, Zheng YT, Wang YH, Fang X, Zhang Y, Li L, He HP, Li SL, Hao XJ. Cycloartane triterpenoids from Cassia occidentalis. PLANTA MEDICA 2012; 78:821-827. [PMID: 22411720 DOI: 10.1055/s-0031-1298376] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A phytochemical investigation of the whole plants of Cassia occidentalis led to the isolation of two new cycloartane triterpenoids, cycloccidentalic acids A and B (1 and 2), and five new related saponins, cycloccidentalisides I-V (3-7), together with sixteen known compounds. The structures of the isolated compounds were elucidated through detailed spectroscopic analyses, including 1D and 2D NMR techniques, and chemical methods. Compounds 2 and 5 showed modest anti-HIV-1 activities with EC₅₀ values of 2.23 µM and 4.36 µM, respectively, in comparison to the positive control.
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70
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Cai JY, Zhang Y, Luo SH, Chen DZ, Tang GH, Yuan CM, Di YT, Li SH, Hao XJ, He HP. Aphanamixoid A, a Potent Defensive Limonoid, with a New Carbon Skeleton from Aphanamixis polystachya. Org Lett 2012; 14:2524-7. [PMID: 22540189 DOI: 10.1021/ol3008149] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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71
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Wang L, He HP, Di YT, Zhang Y, Hao XJ. Catharoseumine, a new monoterpenoid indole alkaloid possessing a peroxy bridge from Catharanthus roseus. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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72
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Guo LL, He HP, Di YT, Li SF, Cheng YY, Yang W, Li Y, Yu JP, Zhang Y, Hao XJ. Indole alkaloids from Ervatamia chinensis. PHYTOCHEMISTRY 2012; 74:140-145. [PMID: 22119076 DOI: 10.1016/j.phytochem.2011.11.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 09/05/2011] [Accepted: 11/03/2011] [Indexed: 05/31/2023]
Abstract
Four vobasinyl-ibogan type bisindole alkaloids, ervachinines A-D (1-4), along with 12 known terpenoid indole alkaloids, were isolated from the whole plant of Ervatamia chinensis. Their structures were elucidated by analysis of spectroscopic data, including 1D and 2D NMR, and the absolute configurations of 1-4 were determined by CD exciton chirality method. All of the compounds were evaluated for in vitro cytotoxicity against five human cancer cell lines: HL-60, SMMC-7721, A-549, MCF-7 and SW480. Bisindole alkaloids 1-6 exhibited inhibitory effects, with IC(50) values comparable to those of cisplatin.
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73
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Tian JM, Ou-Yang SS, Zhang X, Di YT, Jiang HL, Li HL, Dai WX, Chen KY, Liu ML, Hao XJ, Shen YH, Luo C, Zhang WD. Experimental and computational insights into the conformations of tunicyclin E, a new cycloheptapeptide from Psammosilene tunicoides. RSC Adv 2012. [DOI: 10.1039/c1ra00593f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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74
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Zhu F, Di YT, Li XY, Liu LL, Zhang Q, Li Y, Hao XJ, He HP. Neoclerodane diterpenoids from Scutellaria barbata. PLANTA MEDICA 2011; 77:1536-1541. [PMID: 21360416 DOI: 10.1055/s-0030-1270797] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Eight new neoclerodane diterpenoids (1- 8), scutebatas H-O, together with eight known compounds, have been isolated from the whole plant of Scutellaria barbata D. Don. Their structures were elucidated on the basis of spectroscopic studies. In vitro cytotoxicity of selected compounds against cancer cell lines HL-60, SMMC-7721, A-549, MCF-7, and SW480 was evaluated. Compounds 5, 6, 7 showed moderate cytotoxicities against several human cancer cell lines, with IC50 values ranging from 12.6-31.4 µM. In addition, compound 1 showed selective cytotoxicity against MCF-7.
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75
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Yan XH, Di YT, Fang X, Yang SY, He HP, Li SL, Lu Y, Hao XJ. Chemical constituents from fruits of Harrisonia perforata. PHYTOCHEMISTRY 2011; 72:508-13. [PMID: 21315383 DOI: 10.1016/j.phytochem.2011.01.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2010] [Revised: 11/21/2010] [Accepted: 01/07/2011] [Indexed: 05/13/2023]
Abstract
Eight limonoids (1-8) including three A, B and D-seco-16-nor-type ones, 5,6-dehydrodesepoxyharperforin C2 (1), harrpernoid B (2), and its C-9S epimer, harrpernoid C (3), along with six known compounds (9-14), were isolated from fruits of Harrisonia perforata. Extensive spectroscopic analysis was used to elucidate their structures and stereochemistries. Further confirmation of structures of 1 and 2 were obtained by single-crystal X-ray diffraction. Limonoids (1-8) were evaluated for their anti-tobacco mosaic virus activity and in vitro cytotoxicity against A549 and HL60 cell lines; only compound 2 showed weak activity.
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