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Applications of cosy and homonuclear relay 2D-NMR in the determination of the structure of new cembrane isolated from the mollusc planaxis sulcatus

✍ Scribed by Gary S. Linz; Radhika Sanduja; Alfred J. Weinheimer; Maktoob Alam; Gary E. Martin

Book ID
104219154
Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
233 KB
Volume
27
Category
Article
ISSN
0040-4039

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✦ Synopsis

B&&Q& Protonproton homonudear chemical shift correlation [COW] and homonuclear relayed coherence transfer (RELRYI have been used to establish the structure of 3,Wdiacetoxy-15,lG-dehgdrocembran-Wne. Numerous cembranold dlterpenes have been Isolated from a variety of marine and terrestrial sources.2 Several recent publlcatlons have reported the isolatlon of cembranoid CornpoUndS from VdtlOUS SpeCkS of moUusc. Colt. and CcX&Wker&4 have isolated a metabokte of sarcophytoxide, 7,S-deoxysarcophytoxide from the mollusc DvuLa ovum. Previous work in these Laboratorles has Led to the lsolatlon of the oxa-brldged cembranold dlterpene jeunian5 (II and more recently the novel hydroperoxlde pLanaxoo# (21. A Less polar fraction from e sulcatushas now been lnvestlgated and found t0 contain a further cembranord dlterpene whlCh has been ldentlfled as 3.11-dlacetox~l5,Igdehydrocembran+one (31 on the basis of two-dlmenslona1 nmr experrments.

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