Preparation of New Chiral Building Blocks: Highly Enantioselective Reduction of Prochiral 1,3-Cycloalkanediones Possessing a Methyl Group and a Protected Hydroxymethyl Group at Their C2 Position with Baker's Yeast or CBS Catalyst
Highly enantioselective reduction of five-, six-, seven-, and eight-membered prochiral 1,3-cycloalkanediones possessing a methyl group and a protected hydroxymethyl group at their C2 position with baker's yeast or CBS catalyst and a new efficient and general method for preparing the 1,3-cycloalkanediones have been developed. These baker's yeast mediated reductions were found to produce corresponding
Practical and versatile syntheses of angular hydroxymethylated decalones
作者:Young-Ger Suh、Hwa-Soon Kim、P. Raja kumar、Nam-Song Choi、Jae-Kyung Jung
DOI:10.1016/s0040-4020(98)00965-x
日期:1998.12
The practical and versatile syntheses of angular hydroxymethylated decalones as potential syntheticintermediates for terpenoids are described. Particularly angular hydroxymethylated bicyclodecanedione 1 has been synthesized in 45 % overall yield from methyl 2,6-dimethoxy-1,4-dihydrobenzoate via six step sequence.
Highly enantio- and stereoselective preparation of some new chiral building blocks with baker's yeast or the CBS catalyst is described. (C) 2003 Elsevier Ltd. All rights reserved.
TAMAI, YASUFUMI;HAGIWARA, HISAHIRO;UDA, HISASHI, J. CHEM. SOC. CHEM. COMMUN., 1982, N 9, 502-503