An Enantiospecific Approach to Irregular Ligusticum grayi Sesquiterpenes: Synthesis of cis-Preisothapsa-2,8(12)-diene
作者:A. Srikrishna、K. Mahesh
DOI:10.1055/s-0030-1260326
日期:2011.10
Enantiospecific syntheses of 1-epi- (or cis-)-preisothapsa-2,8(12)-diene and 1-epi- and 1,8-diepipreisothapsa-2-en-12-ols, starting from the readily available monoterpene (R)-carvone, have been accomplished.
Facile formation of chiral bicyclo[3.3.1]nonenes via regioselective cyclopropane cleavage of 1-methyltricyclo[4.3.0.02,9]nonan-8-ols
作者:A Srikrishna、D Vijaykumar
DOI:10.1016/s0040-4039(98)01153-8
日期:1998.8
Generation of bicyclo[3.3.1]non-2-enes via a facile, regioselective homo-1,4-elimination reaction of either exo or endo 1-methyltricyclo[4.3.0.02,9]nonan-8-ols on treatment with pyridine and methanesulfonyl chloride, is described.