A route to 24-epibrassinolide from ergosterol avoiding the use of osmium tetroxide
1990 ◽
Vol 55
(11)
◽
pp. 2738-2755
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A synthesis of (22R,23R)-2α,3α,22,23-tetrahydroxy-5α-ergostan-6-one (V) from the dienone IV via the diepoxide XXII is described. The tetrol V is a key intermediate in the synthesis of 24-epibrassinolide. The reactivity of the side chain was studied on 5α-ergost-22-en-6-one (XIV) as a model compound. 1H and 13C NMR spectra of 24-epibrassinolide derivatives are discussed.
2007 ◽
Vol 62
(1-2)
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pp. 84-90
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Keyword(s):
1995 ◽
Vol 50
(9)
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pp. 1404-1411
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1986 ◽
Vol 51
(2)
◽
pp. 318-326
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1980 ◽
Vol 45
(10)
◽
pp. 2766-2771
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Keyword(s):
1991 ◽
Vol 56
(11)
◽
pp. 2340-2351
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