Absolute configuration of marine diterpenoid kalihinol A
作者:Masako Shimomura、Hiroaki Miyaoka、Yasuji Yamada
DOI:10.1016/s0040-4039(99)01664-0
日期:1999.11
The absoluteconfiguration of marine diterpenoid kalihinol A (1) was determined by applying the CD exciton chirality method to bis-p-bromobenzamide 5, which was converted from kalihinol A (1). This is the first determination of the absoluteconfiguration of a kalihinane-type diterpenoid.
Total synthesis of antimalarial diterpenoid (+)-kalihinol A, isolated frommarinespongeAcanthella sp., is achieved. This total synthesis involves regioselective alkylation of an epoxide, construction of a tetrahydropyran ring by iodo-etherification, construction of a cis-decalin ring by intramolecular Diels-Alder reaction, isomerization of cis-decalin to trans-decalin, and subsequent functionalization