New triterpenes from the bark of Canarium asperum

New triterpenes from the bark of Canarium asperum

Chemical investigation of the dichloromethane extract of the resin from the bark of Canarium asperum led to the isolation of a mixture of new triterpene diastereomers, asperol a (1a) and asperol b (1b) in a 3:2 ratio. The structures of 1a and 1b were elucidated by extensive 1D and 2D NMR spectroscop...

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Bibliographic Details
Main Authors: Ragasa, Consolacion Y., Torres, Oscar B., Raga, Dennis D., Mandia, Emelina H., Don, Ming Jaw, Shen, Chien Chang
Format: text
Published: Animo Repository 2014
Subjects:
Canarium > Analysis
Chemistry
Online Access:https://animorepository.dlsu.edu.ph/faculty_research/1977
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Institution: De La Salle University
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Summary:Chemical investigation of the dichloromethane extract of the resin from the bark of Canarium asperum led to the isolation of a mixture of new triterpene diastereomers, asperol a (1a) and asperol b (1b) in a 3:2 ratio. The structures of 1a and 1b were elucidated by extensive 1D and 2D NMR spectroscopy and confirmed by mass spectrometry. β-amyrin and α-amyrin were also obtained as the major constituents of the resin.

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