The resorcylicacidlactones (RAL) are endowed with diverse biological activity ranging from transcription factor modulators (zearalenone and zearalenol) to HSP90 inhibitors (radicicol and pochonin D) and reversible (aigialomycin D) as well as irreversible kinase inhibitors (hypothemycin and other RAL containing a cis‐enone). Our interest in broadening the diversity of this family beyond naturally
Total Synthesis of (+)-7-epi-Tarchonanthuslactone via a Chelation-Controlled Mukaiyama Aldol Reaction
作者:Shuangping Huang、Dongwang Liu、Linjun Tang、Fei Fei Huang、Jianting Zhang、Xiaoji Wang
DOI:10.1080/00397911.2015.1014498
日期:2015.5.19
Abstract An asymmetric total synthesis of (+)-7-epi-tarchonanthuslactone was achieved from commercially available methyl (R)-3-hydroxybutyrate. The key step employed a diastereoselective chelation-controlled Mukaiyama aldol reaction to construct the chiral hydroxyl group at the C-5 position. GRAPHICAL ABSTRACT
The first synthesis of (7S,9R)-decarestrictine H and (7R,9R)-decarestrictine H as well as the improved synthesis of decarestrictine J were achieved. The overall yields of (7S,9R)-decarestrictines H and J were 20.9% each in nine to ten steps from (R)-Roche ester using a unified synthetic route via esterification with 3,3-ethylenedioxyhex-5-enoic acid and ring-closing metathesis, which were the key steps
Studies on the total synthesis of macrolactin A. A stereoselective synthesis of the C3–C13 and C14–C24 fragments
作者:Shukun Li、Rui Xu、Donglu Bai
DOI:10.1016/s0040-4039(00)00412-3
日期:2000.4
Synthetic studies towards the C3–C13 (2) and C14–C24 (3) segments of the potent antiviral and antitumor compound macrolactin A (1) are presented. Segment 2 was constructed via a convergent and facile approach, exploiting Wittig olefination to generate the sensitive E,Z-diene moiety. Segment 3 was obtained from the chiral pool derived sulfone 4 via an α-alkylation–desulfonation reaction sequence.