Kairatenol, yet another novel migrated gammacerane triterpenoid from
摘要:
The structure of kairatenol (1a), the first representative of a new class of migrated gammacerane triterpenoid, has been established on the basis of spectral evidence and chemical correlations.
Two novel triterpenes belonging to swertane skeleton, besides gammacer-16-en-3-beta-ol and 21-alpha-H-hop-22(29)-en-3-beta-ol, of rare occurrence have been isolated from Swertia chirata, along with some common triterpenoids. Their structures were established on the basis of spectral and chemical evidence.