Synthesis and Plant Growth-promoting Activity of Brassinolide Analogues
- 1 November 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Agricultural and Biological Chemistry
- Vol. 45 (11) , 2579-2585
- https://doi.org/10.1080/00021369.1981.10864908
Abstract
The analogues of brassinolide, 15, 19 ~ 23, 29 and 30, were synthesized via key intermediate 5 from stigmasterol. Compound 15 which has the same functional groups as brassinolide on rings A and B showed one tenth of the activity of brassinolide in the lamina inclination test on rice seedlings. However, other analogues with modified ring A were poorly active, and an analogue with modified ring B, 6-oxa-ketone 30, showed only one hundredth of the activity of its 7-oxa-ketone isomer, 29, suggesting that the 2α,3α-dihydroxy-7-oxa-6-ketone moiety is one of the requisites for the biological activity.This publication has 2 references indexed in Scilit:
- Rate of Lamina Inclination in Excised Rice LeavesPhysiologia Plantarum, 1965
- Growth Response of the d-5 and an-1 Mutants of Maize to Some Kaurene DerivativesScience, 1964