Author/Authors :
Shen، نويسنده , , Ya-Ching and Lin، نويسنده , , Jyun-Jhou and Wu، نويسنده , , Ying-Ru and Chang، نويسنده , , Jiun-Yang and Duh، نويسنده , , Chang-Yih and Lo، نويسنده , , Kuang Liang، نويسنده ,
Abstract :
Four new norditerpenoids, designated as cespihypotins A (1), B (2), C (3) and D (4), were isolated from Cespitularia hypotentaculata Roxas (Xeniidae) that was collected in Taiwan. Compounds 1 and 2 are unprecedented structures having 13- and 14-membered lactone ring, respectively. Their structures were elucidated on the basis of extensive spectroscopic analysis. A plausible biogenetic pathway for compounds 1–4 was also proposed.
