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J Asian Nat Prod Res. 2015;17(11):1104-8. doi: 10.1080/10286020.2015.1047353. Epub 2015 May 29.

Venuloxanthone, a new pyranoxanthone from the stem bark of Calophyllum venulosum.

Author information

1
a Chemistry Department , Faculty of Science, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia.
2
b Chemistry Department , Faculty of Applied Science, Universiti Teknologi MARA , Jengka 26400 , Pahang , Malaysia.
3
c Department of Pharmacy , Faculty of Medicine, University of Malaya , Kuala Lumpur , Malaysia.
4
d Department of Chemistry , Faculty of Science, University of Malaya , Kuala Lumpur , Malaysia.

Abstract

A new pyranoxanthone, venuloxanthone (1), was isolated from the stem bark of Calophyllum venulosum, together with three other xanthones, tovopyrifolin C (2), ananixanthone (3) and caloxanthone I (4), along with two common triterpenes, friedelin (5) and lupeol (6). The structures of these compounds were identified using several spectroscopic analyses which are NMR, GCMS and FTIR experiments.

KEYWORDS:

Calophyllum venulosum; Clusiaceae; pyranoxanthone; venuloxanthone

PMID:
26023810
DOI:
10.1080/10286020.2015.1047353
[Indexed for MEDLINE]

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