Facile synthesis of (22R, 23R)-homobrassinolide [homologue of brassinolide, having plantgrowth promoting activity, isolated from the pollen of rape]

agricultural chemicals anatomia anatomie anatomy androceo androecium antera anthere anthers brassica brassica napus chemistry chimie cruciferae dicotiledoneas dicotyledons fisiologia fleur flores flowers fonction physiologique gametes gametos inflorescence inflorescences inflorescencias organic compounds physiological functions physiologie physiology plant anatomy plant growth substances polen pollen produit agrochimique reproduction rhoeadales