Stereoisomers of Castasterone, 3-Epicastasterone and 2,3-Diepicastasterone, in Immature Seeds of Phaseolus vulgaris
A capillary GC-MS analysis revealed that two stereoisomers of castasterone are contained in immature seeds of Phaseolus vulgaris. 400 MHz proton NMR analysis of the stereoisomers determined they are A ring epimers of castasterone, 3-epicastasterone and 2,3-diepicastasterone. In rice lamina inclinati...
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Published in | Journal of plant biology = Singmul Hakhoe chi Vol. 54; no. 1; pp. 10 - 14 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer-Verlag
01.02.2011
Springer Nature B.V 한국식물학회 |
Subjects | |
Online Access | Get full text |
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Summary: | A capillary GC-MS analysis revealed that two stereoisomers of castasterone are contained in immature seeds of Phaseolus vulgaris. 400 MHz proton NMR analysis of the stereoisomers determined they are A ring epimers of castasterone, 3-epicastasterone and 2,3-diepicastasterone. In rice lamina inclination assay, 3-epicastasterone and 2,3-diepicastasterone showed reduced biological activity than that of castasterone. Together with our previous finding that 2-epicastasterone exhibits a less biological activity than CS, this result indicates that epimerization of hydroxyl at C-2 or/and C-3 is/are inactive processes to reduce biological activity of CS after exerting as a bioactive brassinosteroid in P. vulgaris. |
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Bibliography: | 2012002683 F60 G704-000309.2011.54.1.005 |
ISSN: | 1226-9239 1867-0725 |
DOI: | 10.1007/s12374-010-9131-x |