Tetracyclic triterpenoids from Melia azedarach, L.—III
作者:Chao-Kuo Chiang、F.C. Chang
DOI:10.1016/0040-4020(73)80126-7
日期:1973.1
From petroleum ether extracts of the bark of M. azedarach four novel tetracyclic triterpenoids have been isolated and characterized to be C30 compounds of the euphane (20R) series. Previously known triterpenoidsfrom Meliaceae have all been 20S compounds. Kulinone 1 is the first known euphane or tirucallane (20S) derivative oxygenated in the D ring; kulactone 2, kulolactone 3 and methyl kulonate 4