Diverse Structural Variations of The Brassinosteroids in Phaseolus vulgaris Seed

Abstract

From immature seed of Phaseolus vulgaris, a new brassinosteroid, 6-deoxodihydrohomo- dolichosterone, as well as dolichosterone and brassinolide have been identified in addition to 6-deoxodihydrodolichosterone, 6-deoxodihydrocastasterone, castasterone and dolicholide which had already been reported therein. Extensive GC/MS analysis revealed that the number of brassinosteroids fully or partially characterized from the seed totals thirty, including unknown brassinosteroids.