1-halo-cis-3-tetradecenes and processes for the preparation of
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US05463149A1
公开(公告)日:1995-10-31
Disclosed are compounds suitable for use as raw materials which enable cis-olefin compounds useful as physiologically active substances such as the sex pheromones of various insects, or as intermediates for the synthesis thereof to be prepared on an industrial scale at a reasonable cost, and processes for the preparation of cis-olefin compounds by using the same. For this purpose, novel compounds (i.e., 1-halo-cis-3-tetradecenes) of the general formula (I) CH.sub.3 (CH.sub.2).sub.9 CH.dbd.CH(CH.sub.2).sub.2 X (I) wherein X is a halogen atom, are used as raw materials for the preparation of cis-olefin compounds.
Total Synthesis and Structure Confirmation of (−)-Asimitrin, a C<sub>37</sub> Annonaceous Acetogenin with a Hydroxylated Adjacent Bis-Tetrahydrofuran Core
作者:Soo Yeon Kwak、Youngjik Park、Seongju Lim、Hongjun Jang、Dongjoo Lee、Hyoungsu Kim、Deukjoon Kim
DOI:10.1021/acs.orglett.3c02495
日期:2023.9.15
The totalsynthesis and structure confirmation of the potent cytotoxic agent (−)-asimitrin (1), a C37 annonaceous acetogenin having a hydroxylated adjacent bis-tetrahydrofuran (THF) core, are described. The present synthesis features a highly stereoselective, chelate-controlled intramolecular amide enolate alkylation (IAEA) for the synthesis of key intermediate 17-hydroxy-16,17-erythro-16,19-trans-THF
Synthesis of 3E-tetradecenol, 3E, 9E-tetradecadienol, and their acetates starting from acetylcyclopropane
作者:N. M. Ivanova、B. A. Cheskis、E. V. Rubanova、V. G. Yatsynin、A. M. Moiseenkov、O. M. Nefedov
DOI:10.1007/bf00957995
日期:1991.3
Stereospecific synthesis of the linear E-olefins mentioned in the title was realized by a general scheme that was worked out earlier by the authors and which includes as key steps homologization of the corresponding aliphatic pentakisnoraldehydes by means of trimethylsilyloxyvinylcyclopropane and ZnBr2-initiated rearrangement of the intermediate cyclopropylcarbinols under the influence of Me3SiBr.
IVANOVA, N. M.;CHESKIS, B. A.;RUBANOVA, E. V.;YATSYNIN, V. G.;MOISEENKOV,+, IZV. AN CCCP. CEP. XIM.,(1991) N, S. 640-644
作者:IVANOVA, N. M.、CHESKIS, B. A.、RUBANOVA, E. V.、YATSYNIN, V. G.、MOISEENKOV,+