期刊
STEROIDS
卷 76, 期 10-11, 页码 1016-1020出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.steroids.2011.04.004
关键词
Brassinosteroids; Difluorinated steroids; Plant hormones
资金
- Universidad de Buenos Aires (UBACyT) [X-084]
- Agencia Nacional de Promocion Cientifica y Tecnica (ANPCyT) [PICT 0194/07]
- CONICET [PIP 0315]
In this paper we report the synthesis of four ring-A difluorinated analogs of brassinosteroids. The bioactivity of these new compounds was evaluated using the rice lamina inclination test. The results show that one of these analogs elicits a bioactivity comparable to that of 28-homocastasterone, a highly active natural brassinosteroid. This finding suggests that both hydroxyls at C-2 and C-3 in active brassinosteroids are involved as hydrogen bond acceptors in their interactions with the cellular receptor. (C) 2011 Elsevier Inc. All rights reserved.
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