Synthesis and bioactivity of natural and C-3 fluorinated biosynthetic precursors of 28-homobrassinolide.
Phytochemistry
; 58(6): 973-80, 2001 Nov.
Article
em En
| MEDLINE
| ID: mdl-11684198
In this paper we describe the synthesis of two new fluorinated brassinosteroids: (22R,23R)-22,23-dihydroxy-3alpha-fluorostigmastan-6-one and (22R,23R)-22,23-dihydroxy-3beta-fluorostigmastan-6-one. Their bioactivities were evaluated in the rice lamina inclination test and compared with that of 28-homocastasterone, 28-homotyphasterol and 28-homoteasterone, possible biosynthetic precursors of 28-homobrassinolide. Results confirmed expected similarities between the biosynthesis of 24-ethylbrassinosteroids (named as the 28-homo series) and that described for 24-methylbrassinosteroids, and also indicated that these precursors might exhibit per se activities.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Colestanonas
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Flúor
Idioma:
En
Revista:
Phytochemistry
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Reino Unido