Microtropins A-I: 6'-O-(2″S,3″R)-2″-ethyl-2″,3″-dihydroxybutyrates of aliphatic alcohol β-D-glucopyranosides from the branches of Microtropis japonica.

Abstract:

:From the branches of Microtropis japonica (Celastraceae), nine aliphatic glucosides, named microtropins A-I, were isolated. The 6-position of glucose was esterified with (2S,3R)-2-ethyl-2,3-dihydroxybutyric acid. Microtropins A-D contained a rare natured product nitrile functional group in their aglycones. The absolute structures of the (2S,3R)-2-ethyl-2,3-dihydroxybutyric acid moiety and aglycone of microtropin A were determined by an X-ray crystallographic method.

journal_name

Phytochemistry

journal_title

Phytochemistry

authors

Uemura Y,Sugimoto S,Matsunami K,Otsuka H,Takeda Y,Kawahata M,Yamaguchi K

doi

10.1016/j.phytochem.2012.11.007

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

140-7

eissn

0031-9422

issn

1873-3700

pii

S0031-9422(12)00481-5

journal_volume

87

pub_type

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