Stereoselective synthesis of (−)- and (+)-pentenomycins using RCM
摘要:
An efficient synthesis of enantiopure (-)- and (+)-pentenomycins are described by reductive iodo elimination and ring-closing metathesis (RCM), as the key steps. The first synthesis of the unnatural (+)-isomer is described. (C) 2003 Elsevier Science Ltd. All rights reserved.
α-sulfinyl carbanions as an efficient and general synthetic approach for the preparation of (−)-pentenomycin I (1) and (−)-epipentenomycin I (5) and their enantiomers (ent-1 and ent-5), starting from chiral (2S,5S,6S)-ester 6 and ent-6, respectively, has been demonstrated. Easy accesses to pentenomycin analogs have also been demonstrated through the Pummerer, Suzuki–Miyaura, and Sonogashira reactions.
A common and versatile synthetic route to (−) and (+) pentenomycin I, (+) halopentenomycin I and dehydropentenomycin
作者:Sulagna Das、Amarendra Panda、Shantanu Pal
DOI:10.1016/j.carres.2015.08.003
日期:2015.10
A versatile and stereoselective totalsynthesis of (+) and (-) pentenomycin I, (+) halopentenomycins I and dehydropentenomycin from a common chiral polyhydroxylated cyclopentene through oxidation and protection/deprotection has been described. Stereoselective hydroxymethylation, stereoselective Grignard reaction and ring closing metathesis are the key features of our approach.
Stereospecific total synthesis of (±) pentenomycins by flash vacuum thermolysis of substituted tricyclo[5.2.1.02,6]decenones
作者:J.M.J. Verlaak、A.J.H. Klunder、B. Zwanenburg
DOI:10.1016/0040-4039(82)80158-5
日期:1982.1
The synthesis of 4-functionalized tricyclo[5.2.1.02,6]decenones , starting from furans, is described. These structures are shown to be suitable precursors for the synthesis of cyclopentenoids such as pentenomycin and analogs.
Intramolecular acylation of α-sulfinyl carbanion: a facile synthesis of (±)-pentenomycin I and (±)-epipentenomycin I.
作者:Manat Pohmakotr、Supatara Popuang
DOI:10.1016/0040-4039(91)80874-6
日期:1991.1
(±)-Pentenomycin I and (±)-epipentenomycinI were synthesized, starting from methyl 2,2-dimethyl-1,3-dioxolane-4-carboxylate. The key reaction involved the intramolecular acylation of α-sulfinyl carbanion and pyrolysis of the resulting product.