Allylic vs homoallylic control of stereospecificity in the epoxidation of 3(1′-hydroxyethyl)-5,8-dimethoxy-1,2-dihydronaphthalen-1-ol: implications for the synthesis of chiral anthracyclines
作者:Robert W. Irvine、Richard A. Russell、Ronald N. Warrener
DOI:10.1016/s0040-4039(00)95142-6
日期:1985.1
The stereochemistry of the epcxidation of the title compound with t-BuOOH catalysed by VO(acac)2 is subject to exclusive homoallylic control. Secondary allylic alcohols in the side chain regain their normal controlling influence over diastereoselection only when the homoallylic group is blocked.
IRVINE, ROBERT W.;KINLOCH, STEPHEN A.;MCCORMICK, ALISON S.;RUSSELL, RICHA+, TETRAHEDRON, 44,(1988) N 14, C. 4591-4604
作者:IRVINE, ROBERT W.、KINLOCH, STEPHEN A.、MCCORMICK, ALISON S.、RUSSELL, RICHA+
DOI:——
日期:——
Anthracyclines XVII
作者:Robert W. Irvine、Stephen A. Kinloch、Alison S. McCormick、Richard A. Russell、Ronald N. Warrener
DOI:10.1016/s0040-4020(01)86162-7
日期:1988.1
2- Fluoro and 3 - fluoro-4-demethoxydaunomycinone have been prepared by phthalide annelation of the quinone monoacetal(10), which was in turn prepared from the previously described fully oxygenated Ketone (1). Extensions of this approach to permit inclusion of a chiral induction step are also evaluated. The title compounds were prepared by glycosidation of the appropriate racemic aglycones and the