JUNCINS-G AND JUNCINS-H - NEW BRIARANE DITERPENOIDS OF THE INDIAN-OCEAN GORGONIAN JUNCEELLA-JUNCEA PALLAS

Authors
ANJANEYULU ASR RAO NSK
Citation
Asr. Anjaneyulu et Nsk. Rao, JUNCINS-G AND JUNCINS-H - NEW BRIARANE DITERPENOIDS OF THE INDIAN-OCEAN GORGONIAN JUNCEELLA-JUNCEA PALLAS, Journal of the Chemical Society. Perkin transactions. I, (6), 1997, pp. 959-962
Citations number
18
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of the Chemical Society. Perkin transactions. I → ACNP
ISSN journal
0300922X
Issue
6
Year of publication
1997
Pages
959 - 962
Database
ISI
SICI code
0300-922X(1997):6<959:JAJ-NB>2.0.ZU;2-T
Abstract
Chemical examination of the Indian Ocean gorgonian, Junceella juncea f urnishes two new diterpenoids of the briarane skeleton, juncin G, 1 an d juncin H, 3 along with the antipodal derivatives of known gemmacolid es A, 4 and B, 2. The structures of juncin H and G are shown to be S,1 0S,11R,12R,14R,17R)-6-chloro-11,20-epoxy-14-(3- l)-2,9-12-triacetoxy-8 -hydroxybriar-5(16)-en-18,7- olide and 12,14-tetraacetoxybriaran-4,8(1 7)-dien-18,7-olide, respectively, by a comparative study of their spec tral data. For the first time, three polyhydroxy sterols 6-8 are also isolated from this species.