MINOR C29-STEROIDS FROM THE MARINE RED ALGA, GRACILARIA EDULIS

Article abstract of DOI:10.1016/0031-9422(92)83292-7

Four minor C29-steroids, poriferast-5-en-3β-ol (clionasterol), 3β-hydroxyporiferast-5-en-7-one, poriferast-5-en-3β,7α-diol and poriferasta-3,5-diene-7-one were isolated from the marine red alga, Gracilaria edulis.This is the first report of the characterization of the last three compounds from the natural source and the first compound from a species of Gracilaria. Key Word Index - Gracilaria edulis; Gracilariaceae; marine red alga; steroids; 3β-hydroxyporiferast-5-en-7-one; poriferast-5-en-3β,7α-diol; poriferasta-3,5-dien-7-one.