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The Crystal Structure of Hop‐17(21)‐en‐3β‐yl acetate of Pluchea pteropoda Hemsl. from Vietnam
Author(s) -
Luger P.,
Weber M.,
Dung N.X.,
Ngoc P.H.,
Tuong D.T.,
Rang D.D.
Publication year - 2000
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200003)35:3<355::aid-crat355>3.0.co;2-9
Subject(s) - triterpene , stereochemistry , vietnamese , ring (chemistry) , molecule , chemistry , hopanoids , double bond , crystal structure , strain (injury) , crystallography , organic chemistry , biology , philosophy , medicine , linguistics , alternative medicine , pathology , paleontology , structural basin , anatomy , source rock
The title compound isolated from the roots of a Vietnamese plant and being known for its activity against fever was identified by this X‐ray analysis to be a pentacyclic triterpene of hopanoide type with a C17=C21 endocyclic double bond in the five membered ring. The presence of several axially substituted methyl groups on both the α and β side causes the so called "mid‐molecule strain" having already been reported in the literature for other hopane type ring systems.