Crystal and molecular structure of cortisol (11β,17α,21-trihydroxypregn-4-ene-3,20-dione) methanol solvate
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 6,p. 774-781
- https://doi.org/10.1039/p29730000774
Abstract
Cortisol methanol solvate crystallises in the orthorhombic space group P212121, with a= 14·372(4), b= 18·400(5), c= 7·706(2)Å, Z= 4. The structure was solved from diffractometer data by direct methods and refined to R 0·044 for 1908 observed reflexions. Ring A is a distorted ‘sofa’, rings B and C are in the ‘chair’ configuration and ring D is close to a C(13) envelope, with a pseudorotational parameter Δ of 26·1°. The ring junctions B/C and C/D are both trans. The molecule as a whole is slightly convex towards the β-side, with an angle of 10·9° between the C(10)–C(19) and C(13)–C(18) vectors. The conformation of the C(17) side chain is compared with theoretical predictions based on MO and o.r.d. calculations.Keywords
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