The synthesis of two isomeric brassinosteroids, analogues of brassinolide, containing the 2 beta,3 beta diol system typical of ecdysteroids and a five-membered lactone bonded to the steroid ring B is described. The synthesis leads to both lactones via a metal hydride reduction of the Diels-Alder adduct of ergosterol.
Synthesis of two analogues of brassinolide, possible plant growth promoting steroids / P. Allevi, A. Longo, M. Anastasia. - In: TETRAHEDRON. - ISSN 0040-4020. - 55:13(1999), pp. 4167-4176.
Synthesis of two analogues of brassinolide, possible plant growth promoting steroids
P. AlleviPrimo
;M. AnastasiaUltimo
1999
Abstract
The synthesis of two isomeric brassinosteroids, analogues of brassinolide, containing the 2 beta,3 beta diol system typical of ecdysteroids and a five-membered lactone bonded to the steroid ring B is described. The synthesis leads to both lactones via a metal hydride reduction of the Diels-Alder adduct of ergosterol.
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