1
|
D'Errico S, Greco F, Patrizia Falanga A, Tedeschi V, Piccialli I, Marzano M, Terracciano M, Secondo A, Roviello GN, Oliviero G, Borbone N. Probing the Ca 2+ mobilizing properties on primary cortical neurons of a new stable cADPR mimic. Bioorg Chem 2021; 117:105401. [PMID: 34662754 DOI: 10.1016/j.bioorg.2021.105401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/08/2021] [Accepted: 09/11/2021] [Indexed: 01/06/2023]
Abstract
Cyclic adenosine diphosphate ribose (cADPR) is a second messenger involved in the Ca2+ homeostasis. Its chemical instability prompted researchers to tune point by point its structure, obtaining stable analogues featuring interesting biological properties. One of the most challenging derivatives is the cyclic inosine diphosphate ribose (cIDPR), in which the hypoxanthine isosterically replaces the adenine. As our research focuses on the synthesis of N1 substituted inosines, in the last few years we have produced new flexible cIDPR analogues, where the northern ribose has been replaced by alkyl chains. Interestingly, some of them mobilized Ca2+ ions in PC12 cells. To extend our SAR studies, herein we report on the synthesis of a new stable cIDPR derivative which contains the 2″S,3″R dihydroxypentyl chain instead of the northern ribose. Interestingly, the new cyclic derivative and its open precursor induced an increase in intracellular calcium concentration ([Ca2+]i) with the same efficacy of the endogenous cADPR in rat primary cortical neurons.
Collapse
Affiliation(s)
- Stefano D'Errico
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, via Domenico Montesano, 49-80131 Napoli, Italy
| | - Francesca Greco
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, via Domenico Montesano, 49-80131 Napoli, Italy
| | - Andrea Patrizia Falanga
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, via Domenico Montesano, 49-80131 Napoli, Italy
| | - Valentina Tedeschi
- Dipartimento di Neuroscienze, Scienze Riproduttive e Odontostomatologiche, Divisione di Farmacologia, Università degli Studi di Napoli Federico II, Via Sergio Pansini, 5-80131 Napoli, Italy
| | - Ilaria Piccialli
- Dipartimento di Neuroscienze, Scienze Riproduttive e Odontostomatologiche, Divisione di Farmacologia, Università degli Studi di Napoli Federico II, Via Sergio Pansini, 5-80131 Napoli, Italy
| | - Maria Marzano
- Istituto di Cristallografia (IC) CNR, Via Amendola 122/O-70126, Bari, Italy
| | - Monica Terracciano
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, via Domenico Montesano, 49-80131 Napoli, Italy
| | - Agnese Secondo
- Dipartimento di Neuroscienze, Scienze Riproduttive e Odontostomatologiche, Divisione di Farmacologia, Università degli Studi di Napoli Federico II, Via Sergio Pansini, 5-80131 Napoli, Italy
| | | | - Giorgia Oliviero
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, via Sergio Pansini, 5-80131 Napoli, Italy.
| | - Nicola Borbone
- Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, via Domenico Montesano, 49-80131 Napoli, Italy
| |
Collapse
|
2
|
Galeano Carrano RS, Provasi PF, Ferraro MB, Alkorta I, Elguero J, Sauer SPA. A Density Functional Theory Study of Optical Rotation in Some Aziridine and Oxirane Derivatives. Chemphyschem 2021; 22:764-774. [PMID: 33528071 DOI: 10.1002/cphc.202001010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/01/2021] [Indexed: 12/25/2022]
Abstract
We present time-dependent density functional theory (TDDFT) calculations of the electronic optical rotation (ORP) for seven oxirane and two aziridine derivatives in the gas phase and in solution and compare the results with the available experimental values. For seven of the studied molecules it is the first time that their optical rotation was studied theoretically and we have therefore investigated the influence of several settings in the TDDFT calculations on the results. This includes the choice of the one-electron basis set, the exchange-correlation functional or the particular polarizable continuum model (PCM). We can confirm that polarized quadruple zeta basis sets augmented with diffuse functions are necessary for converged results and find that the aug-pc-3 basis set is a viable alternative to the frequently employed aug-cc-pVQZ basis set. Based on our study, we cannot recommend the generalized gradient functional KT3 for calculations of the ORP in these compounds, whereas the hybrid functional PBE0 gives results quite similar to the long-range correct CAM-B3LYP functional. Finally, we observe large differences in the solvent effects predicted by the integral equation formalism of PCM and the SMD variant of PCM. For the majority of solute/solvent combinations in this study, we find that the SMD model in combination with the PBE0 functional and the aug-pc-3 basis set gives the best agreement with the experimental values.
Collapse
Affiliation(s)
- Ramiro S Galeano Carrano
- Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Posadas, Argentina
| | - Patricio F Provasi
- Department of Physics, IMIT, Northeastern University, CONICET, Corrientes, Argentina
| | - Marta B Ferraro
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, CONICET, Buenos Aires, Argentina
| | - Ibon Alkorta
- Instituto de Química Médica (C.S.I.C.), Madrid, Spain
| | - José Elguero
- Instituto de Química Médica (C.S.I.C.), Madrid, Spain
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
3
|
|
4
|
Sharma A, Athe S, Ghosh S. Total Synthesis of Callyspongiolide: An Anticancer Marine Natural Product. ACS OMEGA 2018; 3:16563-16575. [PMID: 31458289 PMCID: PMC6643460 DOI: 10.1021/acsomega.8b02156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/20/2018] [Indexed: 06/10/2023]
Abstract
The stereoselective total synthesis of cytotoxic marine macrolide callyspongiolide has been reported. The 14-membered macrolactone ring along with Z-olefin in the molecule was constructed via an intramolecular Horner-Wadsworth-Emmons olefination in a Z-selective fashion. The other E-olefinic moiety as well as the C9 stereocenter was introduced via stereoselective addition of the methyl group in an SN2' fashion. The C5 stereocenter was installed via Sakurai allylation, whereas the C7 center was fixed by Jacobsen hydrolytic kinetic resolution. The C12 methyl and C13 hydroxy centers were fixed via Macmillan coupling reaction. The macrolactone core with a vinyl iodide side chain was coupled with the known alkyne fragment to complete the synthesis.
Collapse
Affiliation(s)
- Ashish Sharma
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| | - Sudhakar Athe
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Subhash Ghosh
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| |
Collapse
|
5
|
Show K, Gonnade RG, Kumar P. First Total Synthesis of the Proposed Structure of Pandangolide 1. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Krishanu Show
- Organic Chemistry Division; CSIR-National Chemical Laboratory (CSIR-NCL); Dr. Homi Bhabha Road -411008 Pune India
| | - Rajesh G. Gonnade
- Centre for Material Characterization; CSIR-National Chemical Laboratory (CSIR-NCL); Dr. Homi Bhabha Road -411008 Pune India
| | - Pradeep Kumar
- Organic Chemistry Division; CSIR-National Chemical Laboratory (CSIR-NCL); Dr. Homi Bhabha Road -411008 Pune India
| |
Collapse
|
6
|
Yao H, Wang J, Tong R. Recent Developments in Total Syntheses of Cephalosporolides, Penisporolides, and Ascospiroketals. CHEM REC 2017; 17:1109-1123. [DOI: 10.1002/tcr.201700001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Hongliang Yao
- Guangdong Key Laboratory of Plant Resources, School of Life Sciences; Sun Yat-sen University; Xingang Xi Road Guangzhou 510275, Guangdong China
| | - Jian Wang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong China
| | - Rongbiao Tong
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong China
| |
Collapse
|
7
|
Show K, Kumar P. Synthesis of Ophiocerins A, B and C, Botryolide E, Decarestrictine O, Stagonolide C and 9-epi-Stagonolide C Employing Chiral Hexane-1,2,3,5-tetraol Derivatives as Building Blocks. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600625] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Krishanu Show
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; 411008 Pune India
| | - Pradeep Kumar
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; 411008 Pune India
| |
Collapse
|
8
|
|
9
|
Athe S, Sharma A, Marumudi K, Ghosh S. Synthetic studies of callyspongiolide: synthesis of the macrolactone core of the molecule. Org Biomol Chem 2016; 14:6769-79. [DOI: 10.1039/c6ob01007e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Synthesis of the fully functionalized macrolactone core of the highly cytotoxic marine natural product callyspongiolide has been achievedviaaZ-selective intramolecular H–W–E reaction and allylic alkylation of an activatedZ-allylic alcoholviaan SN2′ fashion as key steps.
Collapse
Affiliation(s)
- Sudhakar Athe
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Ashish Sharma
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Kanakaraju Marumudi
- Centre for NMR & Structural Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Subhash Ghosh
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| |
Collapse
|
10
|
|
11
|
Vamshikrishna K, Srinu G, Srihari P. A facile chiral pool synthesis of 9-epi-decarestrictine-D, decarestrictine-D and O. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2013.12.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
12
|
Affiliation(s)
- Hélène Pellissier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
| | - Hervé Clavier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313 13397, Marseille, France
| |
Collapse
|
13
|
Yamauchi T, Takidaira JI, Okamoto K, Sugiura T, Horikoshi H, Kudo S, Sasaki S, Mizushima N, Higashiyama K. Total Synthesis of the Proposed Structures of Eushearilide. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)79] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
14
|
|
15
|
Asymmetric routes to pentadec-1-en-4-ol: application to the syntheses of aculeatins F and epi-F, (R)- and (S)-5-hexadecanolide and a formal synthesis of solenopsin. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
16
|
Parenty A, Moreau X, Niel G, Campagne JM. Update 1 of: Macrolactonizations in the Total Synthesis of Natural Products. Chem Rev 2013; 113:PR1-40. [DOI: 10.1021/cr300129n] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- A. Parenty
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - X. Moreau
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Gilles Niel
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
| | - J.-M. Campagne
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
| |
Collapse
|
17
|
Kumar P, Dubey A, Harbindu A. Enantio- and diastereocontrolled conversion of chiral epoxides to trans-cyclopropane carboxylates: application to the synthesis of cascarillic acid, grenadamide and L-(-)-CCG-II. Org Biomol Chem 2012; 10:6987-94. [PMID: 22832742 DOI: 10.1039/c2ob25622c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient high yielding improved method for the enantio- and diastereoselective cyclopropanation of chiral epoxides using triethylphosphonoacetate and base (Wadsworth-Emmons cyclopropanation) is reported. The utility of this protocol is illustrated by concise and practical synthesis of cascarillic acid, grenadamide and L-(-)-CCG-II, a cyclopropane containing natural products.
Collapse
Affiliation(s)
- Pradeep Kumar
- Division of Organic Chemistry, National Chemical Laboratory, Pune 411008, India.
| | | | | |
Collapse
|
18
|
Tripathi D, Kumar P. Formal synthesis of tetrahydrolipstatin and tetrahydroesterastin. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.05.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
19
|
Kumar P, Pandey M, Gupta P, Dhavale DD. Organocatalytic stereoselective synthesis of passifloricin A. Org Biomol Chem 2012; 10:1820-5. [PMID: 22246108 DOI: 10.1039/c2ob06711k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective synthesis of passifloricin A has been achieved in high diastereomeric excess. The 1,3-polyol moiety was constructed by iterative proline-catalyzed sequential α-aminoxylation and Horner-Wadsworth-Emmons (HWE) olefination of aldehydes while the synthesis of lactone moiety was achieved by ring-closing metathesis (RCM).
Collapse
Affiliation(s)
- Pradeep Kumar
- Division of Organic Chemistry, National Chemical Laboratory (CSIR), Pune, 411 008, India
| | | | | | | |
Collapse
|
20
|
Vadhadiya PM, Puranik VG, Ramana CV. The total synthesis and structural revision of stagonolide D. J Org Chem 2012; 77:2169-75. [PMID: 22309439 DOI: 10.1021/jo202138g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The total synthesis of the putative structure of stagonolide D has been completed. The relative and absolute configuration of stagonolide D was established by synthesizing its optical antipode. The adopted strategy involves the construction of the central macrolide employing ring-closing metathesis (RCM), followed by selective protecting group manipulations and a final concomitant -OTBS deprotection and displacement of an -OMs placed next to it, resulting in the formation of the epoxide ring.
Collapse
Affiliation(s)
- Paresh M Vadhadiya
- National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune-411 008, India
| | | | | |
Collapse
|
21
|
Nookaraju U, Harbindu A, Bhise AD, Sharma BM, Kumar P. First total synthesis of seimatopolide B. RSC Adv 2012. [DOI: 10.1039/c2ra21838k] [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
|
22
|
Schmidt B, Kunz O. One-Flask Tethered Ring Closing Metathesis-Electrocyclic Ring Opening for the Highly Stereoselective Synthesis of Conjugated Z/E-Dienes. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101497] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
23
|
|
24
|
Kumar P, Dubey A, Puranik VG. A general and concise asymmetric synthesis of sphingosine, safingol and phytosphingosines via tethered aminohydroxylation. Org Biomol Chem 2010; 8:5074-86. [PMID: 20844791 DOI: 10.1039/c0ob00117a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
A novel, practical and efficient enantioselective synthesis of sphingoid bases, l-threo-[2S,3S]-sphinganine (safingol), l-threo-[2S,3S]-sphingosine, l-arabino-[2R,3S,4R] and l-xylo-[2R,3S,4S]-C(18)-phytosphingosine is described. The synthetic strategy features the Sharpless kinetic resolution and tethered aminohydroxylation (TA) as the key steps.
Collapse
Affiliation(s)
- Pradeep Kumar
- Division of Organic Chemistry, National Chemical Laboratory, Pune 411008, India.
| | | | | |
Collapse
|
25
|
Kumar P, Pandey M, Gupta P, Naidu SV, Dhavale DD. Enantio- and Diastereocontrolled Total Synthesis of (+)-Strictifolione. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001221] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
26
|
Kumar P, Pandey M, Gupta P, Dhavale DD. An organocatalytic route to the synthesis of lactone moiety of compactin and mevinolin. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.08.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Mori K, Shikichi Y, Shankar S, Yew JY. Pheromone synthesis. Part 244: Synthesis of the racemate and enantiomers of (11Z,19Z)-CH503 (3-acetoxy-11,19-octacosadien-1-ol), a new sex pheromone of male Drosophila melanogaster to show its (S)-isomer and racemate as bioactive. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
28
|
Walleser P, Brückner R. Stereocontrolled Synthesis of 1,3,5-Triols by an Iteration of Asymmetric Dihydroxylation and Deoxygenation. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000280] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
29
|
Giri AG, Mondal MA, Puranik VG, Ramana CV. Effect of the allylic substituents on ring closing metathesis: the total synthesis of stagonolide B and 4-epi-stagonolide B. Org Biomol Chem 2010; 8:398-406. [DOI: 10.1039/b916198h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Radha Krishna P, Rao TJ. Total synthesis of decarestrictine I and botryolide B via RCM protocol. Org Biomol Chem 2010; 8:3130-2. [DOI: 10.1039/c004556j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
|
32
|
|
33
|
Mohapatra DK, Sahoo G, Ramesh DK, Rao JS, Sastry GN. Total syntheses and absolute stereochemistry of decarestrictines C1 and C2. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.099] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
34
|
Barradas S, Urbano A, Carreño M. Concise Enantioselective Synthesis of the Ten-Membered Lactone Cephalosporolide G and Its C-3 Epimer. Chemistry 2009; 15:9286-9. [DOI: 10.1002/chem.200901735] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
35
|
Dubey A, Kumar P. A tethered aminohydroxylation route to l-arabino-[2R,3S,4R] and l-xylo-[2R,3S,4S]-C18-phytosphingosines. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.173] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
36
|
|
37
|
A general approach to medium-sized ring ethers via hydrolytic and oxidative kinetic resolutions: stereoselective syntheses of (−)-cis-lauthisan and (+)-isolaurepan. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.062] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
38
|
|
39
|
Gupta P, Kumar P. An Efficient Total Synthesis of Decarestrictine D. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|