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 stereospecific total synthesis of (±)-epipentenomycin I, (±)-epipentenomycin II and (±)-epipentenomycin III
作者:Amos B. Smith、Nancy N. Pilla
DOI:10.1016/0040-4039(80)88095-6
日期:1980.1
A highly efficient, stereospecificsynthesis of the epimeric pentenomycins is reported utilizing the stereospecific addition of OsO4 to substituted cyclopentenes.
作者:Weerachai Phutdhawong、Stephen G. Pyne、Apiwat Baramee、Duang Buddhasukh、Brian W. Skelton、Allan H. White
DOI:10.1016/s0040-4039(02)01216-9
日期:2002.8
A synthesis of (±) epipentenomycin I and III is reported from a regioselectiveepoxidation of racemic 3-hydroxy- and 3-acetoxy-2-methylene-4-cyclopentenone, respectively, with dimethyldioxirane followed by hydrolytic ring-opening of the resulting epoxide.
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.