A new conformer of 20-hydroxyecdysone from Sesuvium portulacastrum: an X-ray crystallographic study
Publication Type:Journal Article
Source:Natural product research, Taylor & Francis, Volume 17, Number 2, p.103–108 (2003)
X-ray single crystal analysis of 20-hydroxyecdysone (20E, 2), an important insect moulting hormone, isolated from Sesuvium portulacastrum Linn. was found to exhibit a unique stereochemical configuration revealing it to be a different conformer (polymorph) possessing the aliphatic chain atoms in a trans configuration. Moreover, the analysis also revealed the presence of three molecules of water of crystallisation thereby restricting the freedom of the aliphatic side chain.
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