Stereoselective Synthesis of the Bis-tetrahydrofuran Fragment (C-1-C-9) of Asteltoxin
作者:Johann Mulzer、Joerg-Torsten Mohr
DOI:10.1021/jo00084a039
日期:1994.3
An 18-step synthesis of the chiral bis-tetrahydrofuran fragment 2 of asteltoxin 1 is described. This synthesis proceeds under practically complete substrate stereocontrol, starting with compound 5a. From there the chirality centers of 2 are generated with >95% ds each by using a sequence of Claisen rearrangement, chelate Cram Grignard addition, and osmylation reactions. The current synthesis affords 2 in racemic form. The key intermediate 8 was also synthesized with ee > 96%, which should provide access to 2 in both enantiomeric forms.
Coleoptera pheromones 11. Formal synthesis of serricornine from S-(+)-3,7-dimethyl-1,6-octadiene
作者:Nguen Kong Khao、M. V. Mavrov、�. P. Serebryakov
DOI:10.1007/bf00957161
日期:1989.6
NGUEN, KONG XAO;MAVROV, M. V.;SEREBRYAKOV, EH. P., IZV. AN CCCP. CEP. XIM.,(1989) N, S. 1361-1364
作者:NGUEN, KONG XAO、MAVROV, M. V.、SEREBRYAKOV, EH. P.
DOI:——
日期:——
REETZ, M. T.;WESTERMANN, J.;STEINBACH, R.;WENDEROTH, B.;PETER, R.;OSTAREK+, CHEM. BER., 1985, 118, N 4, 1421-1440
作者:REETZ, M. T.、WESTERMANN, J.、STEINBACH, R.、WENDEROTH, B.、PETER, R.、OSTAREK+