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. 2000 Feb 24;2(4):507-10.
doi: 10.1021/ol991362i.

A marine diterpene with a novel tetracyclic framework from the West Indian gorgonian octocoral Pseudopterogorgia elisabethae

A D Rodríguez  1 , C Ramírez
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A marine diterpene with a novel tetracyclic framework from the West Indian gorgonian octocoral Pseudopterogorgia elisabethae

A D Rodríguez et al. Org Lett. .

Abstract

[structure: see text] Colombiasin A (1) was isolated from an extract of the West Indian gorgonian octocoral Pseudopterogorgia elisabethae that showed strong inhibitorial activity against Mycobacterium tuberculosis H37Rv. Structure elucidation by interpretation of 2D-NMR spectroscopic data, IR, UV, and accurate mass measurements (HREI-MS) revealed that colombiasin A belongs to a previously undescribed class of C20 rearranged diterpenes possessing an intricate tetracyclic framework.

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