A new sesquiterpene from Dendranthema grandiflora flowers

A new sesquiterpene from Dendranthema grandiflora flowers

Chemical investigation of the dichloromethane extracts of the flowers of Dendranthema grandiflora cv. Yoko Ono afforded a new sesquiterpene lactone, grandiflorolide (1), 1,2-dilinoleoyl-3-linolenoylglycerol (2), a mixture of pseudotaraxasterol (3a), taraxasterol (3b), β-amyrin (3c), α-amyrin (3d), a...

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Bibliographic Details
Main Authors: Ragasa, Consolacion Y., Si, Madeleine, Tan, Maria Carmen S., Pelobello, Deanne Hazel, Don, Ming Jaw, Shen, Chien Chang
Format: text
Published: Animo Repository 2020
Subjects:
Compositae > Analysis
Chrysanthemums > Analysis
Chemistry
Online Access:https://animorepository.dlsu.edu.ph/faculty_research/2000
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Institution: De La Salle University
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Summary:Chemical investigation of the dichloromethane extracts of the flowers of Dendranthema grandiflora cv. Yoko Ono afforded a new sesquiterpene lactone, grandiflorolide (1), 1,2-dilinoleoyl-3-linolenoylglycerol (2), a mixture of pseudotaraxasterol (3a), taraxasterol (3b), β-amyrin (3c), α-amyrin (3d), and lupeol (3e) in about 2:1:1:0.5:0.5 ratio, and another mixture of β-sitosterol (4a) and stigmasterol (4b) in about 2:1 ratio. The structure of 1 was elucidated by extensive 1D and 2D NMR spectroscopy, while those of 2–4b were identified by comparison of their NMR data with literature data. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

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