Regioselective synthesis of allyltrimethylsilanes from allylic halides and allylic sulfonates. Application to the synthesis of 2,3-bis(trimethylsilyl)alk-1-enes
Sphinga-4,8-dienine derivatives were synthesized from a vinyl-epoxide 5 via three routes. First, reaction of 5 with 2-dodecenyl cyanocuprate afforded a 1:1 mixture of (4E,8E)- and (4E,8Z)-sphingadienine derivatives in high yield. Second, the (4E,8E)-isomer was selectively synthesized via allylic bromide-allylic sulfone coupling followed by desulfonylation. Third, the (4E,8Z)-isomer was selectively
Zhang, Zhi-Bo; Wang, Zhi-Min; Wang, Yu-Xiu, Journal of the Chemical Society. Perkin transactions I, 2000, # 1, p. 53 - 58
作者:Zhang, Zhi-Bo、Wang, Zhi-Min、Wang, Yu-Xiu、Liu, Huan-Quan、Lei, Gui-Xin、Shi, Min
DOI:——
日期:——
SMITH, J. G.;DROZDA, S. E.;PETRAGLIA, S. P.;QUINN, N. R.;RICE, E. M.;TAYL+, J. ORG. CHEM., 1984, 49, N 22, 4112-4120
作者:SMITH, J. G.、DROZDA, S. E.、PETRAGLIA, S. P.、QUINN, N. R.、RICE, E. M.、TAYL+
DOI:——
日期:——
Regioselective synthesis of allyltrimethylsilanes from allylic halides and allylic sulfonates. Application to the synthesis of 2,3-bis(trimethylsilyl)alk-1-enes
作者:Janice Gorzynski Smith、Susan E. Drozda、Susan P. Petraglia、Nina R. Quinn、Elizabeth M. Rice、Barbara S. Taylor、Malini Viswanathan
DOI:10.1021/jo00196a002
日期:1984.11
Efficient stereocontrolled synthesis of sphingadienine derivatives
Sphinga-4,8-dienines, principal long-chain bases of glycolipids in plants and fungi, were efficiently synthesized from l-serine. Hydrozirconation of pentadec-5-en-1-ynes followed by ZnBr2-catalyzed addition to Garner's aldehyde afforded protected sphinga-4,8-dienines stereoselectively. The (2S,3R,4E,8E)-9-methyl-sphingadienine derivative was then coupled with 2(R)-acetoxypalmitic acid derivative prepared