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Biosynthetic preparation of labeled 4,4-dimethylzymosterol

U S Maitra1, V P Mohan, D B Sprinson

  • 1Department of Biochemistry, College of Physicians & Surgeons, Columbia University, New York, NY.

Steroids
|March 1, 1989
PubMed

Abstract:

Labeled 4,4-dimethyl-5 alpha -cholesta-8,24-dien-3 beta-ol (4,4-dimethylzymosterol) was prepared by incubating labeled mevalonate with rat liver extracts in the presence of arsenite and lanosterol.

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Overview
Alcohols can be synthesized from alkyl halides via nucleophilic substitution reactions. The highly polar carbon-halogen bond in the substrate makes halide a good leaving group. The hydroxide ion or water can act as a nucleophile to take the place of halide and form an alcohol. The substitution reactions occur via two different reaction pathways, SN1 or SN2, depending on the nature of carbon attached to the halide.
Primary alcohols are synthesized from primary alkyl halides, and the...

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