title: 22-Oxocholestanes as plant growth promoters.
abstract: The spirostanic steroidal side-chain of diosgenin and hecogenin was modified to produce 22-oxocholestane derivatives. This type of side-chain was obtained in good yields through a straightforward four-step pathway. These compounds show potent brassinosteroid-like growth promoting activity evaluated via the rice lamina joint inclination bioassay. This is the first report of steroidal skeletons bearing the 22-oxocholestane side-chain and preserving the basic structure (A-D rings) from their corresponding parent compounds acting as plant growth promoters.
authors: Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Ciudad Universitaria, 72570 Puebla, Pue., Mexico.
authors: Reyna
authors: R
authors: Zeferino-Diaz
authors: Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Ciudad Universitaria, 72570 Puebla, Pue., Mexico.
authors: J Ciciolil
authors: JC
authors: Hilario-Martinez
authors: Escuela de Biologia-Licenciatura Multidisciplinaria en Biotecnologia, Benemerita Universidad Autonoma de Puebla, Ciudad Universitaria, 72570 Puebla, Pue., Mexico; Herbario y Jardin Botanico, Benemerita Universidad Autonoma de Puebla, Ciudad Universitaria, 72570 Puebla, Pue., Mexico. Electronic address: maricela.rodriguez@correo.buap.mx.
authors: Maricela
authors: M
authors: Rodriguez-Acosta
authors: Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Ciudad Universitaria, 72570 Puebla, Pue., Mexico.
authors: Jesus
authors: J
authors: Sandoval-Ramirez
authors: Departamento de Fisica Aplicada, Centro de Investigacion y de Estudios Avanzados, Unidad Merida, Km 6 Antigua Carretera a Progreso, Apdo. Postal 73, Cordemex, 97310 Merida, Yuc., Mexico. Electronic address: mfernandez@mda.cinvestav.mx.
authors: Maria A
authors: MA
authors: Fernandez-Herrera
mesh_terms: D002776:Cholestanes / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D012275:Oryza / Q000254:growth & development*; D010937:Plant Growth Regulators / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology
chemical_list: D002776:Cholestanes; D010937:Plant Growth Regulators
keywords: 22-Oxocholestane side-chain; Brassinosteroids; Growth promoting activity; Rice lamina joint inclination bioassay