Chemistry of Natural Compounds p. 59 - 66 (1982)
Update date:2022-07-29
Topics:
Kamernitskii, A. V.
Levi, V. G.
Reshetova, I. G.
Bogdanov, V. S.
Pavlov, V. A.
Cherepanova, E. G.
The paper is devoted to the synthesis of 3,17α,20-trihydroxy-16β,23-epoxy-21,24-dinor-5αH-cholan-6-one and 3,5α,17α,20-tetrahydroxy-16β,23-epoxy-21,24-dinorcholan-6-one and derivatives of them.It has been shown that the reduction of 3,17α-dihydroxy-16β,23-epoxy-21,24-dinorchol-5-en-20-one with sodium tetrahydroborate and with diborane takes place stereospecifically with different spatial directivities: in the products of diborane reduction, ring E exists in the boat form, as has been shown by 1H and 13C NMR methods.The trans linkage of rings A/B in the modified steroids has been confirmed by their circular dichroism spectra.
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Doi:10.1134/S1070428016120034
(2016)Doi:10.1016/S0008-6215(00)81074-5
(1982)Doi:10.1021/om049427v
(2005)Doi:10.1081/SCC-100103979
(2001)Doi:10.1002/adsc.200404209
(2005)Doi:10.1007/BF00798955
(1983)
