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The proton magnetic resonance spectra of d-aldosterone and its acetylated derivatives

✍ Scribed by P. Genard

Publisher: John Wiley and Sons
Year: 1971
Tongue: English
Weight: 435 KB
Volume: 3
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270030615

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✦ Synopsis

PMR spectra of d-aldosterone, its acetylated derivatives and related compounds were studied using 60 and 100 MHz spectrometers at various temperatures, in CDCI,, DMSO-d,,, CD30D and DzO.

The aldehyde form (1) was not found. The solutions of d-aldosterone and aldosterone-21 acetate contain a mixture of the cyclic forms with one (11-18) hemi-ketal bridge (2) and two (11-18, 18-20) hemi-ketal bridges (3).

Preliminary results concerning modifications of the relative concentration of 2 and 3 obtained by varying solvents and temperature are given. Aldosterone-diacetate exists in only one form, most likely form 2.

There is restricted rotation of the group at C-21 in d-aldosterone and in form 3 of aldosterone 2 1 -acetate.

One molecule of water is probably bound to d-aldosterone.

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