𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ring Expansion in the Benzofuran Series

✍ Scribed by Dr. Bernard Libis; Dr. Ernst Habicht

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
116 KB
Volume
10
Category
Article
ISSN
0044-8249

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✦ Synopsis

ed on GC-MS of the original acid fluoroheptyl ester mixture['] at the retention time of ester (1 f).

In addition, two stereoisomeric C,,-steroid carboxylic acids were identified. Although structural proof is not complete, present results suggest that they are 5a-(Ig) and 5 B-cholanic acids.

The significance of this work is that these are the first polycyclic naphthenic carboxylic acids ever reported in petroleum as individual compounds; and on top of this they possess biological precursor hydrocarbon skeletons and, therefore, are geochemically significant. Animal bile acids are considered to be the most likely precursors.

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