甲醇 、 phorbasone A 在
盐酸 作用下,
反应 24.0h,
以48%的产率得到(4aR,6S,6aS,10aS,11R,12aR)-11-methoxy-3,6a,10,10-tetramethyl-12-methylene-6-(prop-1-en-2-yl)-6,6a,7,8,9,10,10a,11,12,12a-decahydro-1H-benzo[b]xanthen-2(4aH)-one
参考文献:
名称:
Phorbasones A and B, Sesterterpenoids Isolated from the Marine Sponge Phorbas sp. and Induction of Osteoblast Differentiation
摘要:
Two new sesterterpenoids, phorbasones A (1) and B (2), were isolated from the Korean marine sponge Phorbas sp. Their complete structures were elucidated by spectral data and chemical reactions. Phorbasone A exhibited a positive effect on the calcium deposition activity in C3H10T1/2 cells. The biogenic origin of the core structure is believed to be through a novel rearrangement from the ansellone carbon structure.