Secondary metabolites from the leaves of Syzgium samangense

Date of Publication

2009

Document Type

Master's Thesis

Degree Name

Master of Science in Chemistry

College

College of Science

Department/Unit

Chemistry

Thesis Adviser

Consolacion Y. Ragasa

Defense Panel Member

Glenn V. Alea
Alicia M. Aguinaldo

Abstract/Summary

The dichloromethane extract of the air-dried leaves of Syzygium samarangense (Blume) Merr. & Perry afforded 2,4-dihydroxy-3-methyl-6-methoxychalcone (MK11), 24-dihydroxy-3,5-dimethyl-6-methoxychalcone(MK6), 2-hydroxy-3- methyl-4,6-dimethoxychalcone(MK5), squalene(MK9), betulin(MK13), sitosterol(MK12), lupeol(MK7), cycloartenyl stearate[MK10(1)], lupenyl stearate[MK10(2)], sitosteryl stearate [MK10(3)] and 24-methylenecyloartenyl stearate[MK10(4)]. MK10 was obtained as a mixture of triterpenes esterified with stearate. Due to the similarity in the polarity of the compounds in MK10, it is not possible to separate them through normal phase gravity column chromatography.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTG004638

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

1 computer optical disc ; 4 3/4 in.

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