A. Kawamura et al., CONFIGURATIONAL ASSIGNMENT OF BRASSINOSTEROID SIDE-CHAIN BY EXCITON COUPLED CIRCULAR DICHROIC SPECTROSCOPY, Tetrahedron, 53(35), 1997, pp. 11961-11970
A microscale method was developed to determine the sidechain configura
tion of brassinosteroids, a class of potent plant growth promoters. Mi
croscale naphthoylation followed by circular dichroic (CD) spectroscop
y measurement in acetonitrile unambiguously differentiate between the
two possible vicinal syn-diol configurations, (22R,23R) and (22S,23S).
(C) 1997 Elsevier Science Ltd.