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Synthesis of (24R)- and (24S)-5,28-stigmastadien-3.beta.-ol and determination of the stereochemistry of their 24-hydroxy analogs, the saringosterols

✍ Scribed by Catalan, Cesar A. N.; Kokke, W. C. M. C.; Duque, Carmenza; Djerassi, Carl

Book ID
127383946
Publisher
American Chemical Society
Year
1983
Tongue
English
Weight
956 KB
Volume
48
Category
Article
ISSN
0022-3263

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πŸ“œ SIMILAR VOLUMES

Synthesis of the putative marine sterols
Synthesis of the putative marine sterols [24R]- and [24S]-23,24-dimethyl-5Ξ±-cholest-23(29)-en-3Ξ²-ol.
✍ T. Gebreyesus; Carl Djerassi πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 French βš– 207 KB

The synthesis and stereochemistry of [24R]-and [24S]-23,24-dimethyl-5c+cholest-23(29)-en-3B-ol is reported; both isomers are different from a natural marine sterol to which the structure had been assigned. and Dr. M. Alam (University of Houston) for a sample of the G. monilata sterol.

Minor and Trace Sterols in Marine Invert
Minor and Trace Sterols in Marine Invertebrates. XII. Occurrence of 24 (R + S)-isopropenylcholesterol, 24 (R + S)-methylcholesta-5, 25-dien-3Ξ²-ol, and 24 (R + S)-methylcholesta-7, 25-dien-3Ξ²-ol in the caribbean sponge, Verongia cauliformis
✍ W. C. M. C. Kokke; C. S. Pak; William Fenical; Carl Djerassi πŸ“‚ Article πŸ“… 1979 πŸ› John Wiley and Sons 🌐 German βš– 563 KB

## Abstract In addition to the two new sterols verongulasterol **11** and 25‐dehydroaplysterol **13** of __Verongia cauliformis__^3^), which were reported earlier [2] [3], the minor and trace sterols of this sponge include five new sterols listed in the title (with the exception of the known 24 __S