Abstract

CHEMICAL CONSTITUENTS OF THE LEAVES OF CAYRATIA TRIFOLIA (L.) DOMIN AND ABIES WEBBIANA (WALL EX D. DON) LINDL.

Shahnaz Sultana, Mohammed Ali* and Showkat Rasool Mir

ABSTRACT

Cayratia trifolia (L.) Domin (family Vitaceae) is a deciduous, glabrous, perennial, climbing shrub used to treat boilds, fractured bones, dandruff, eczema, fever, food poisoning, lymphatic swellings and muscular pain. Abies webbiana (Wall ex D. Don) Lindl. (family Pinaceae) is a large, tall, evergreen, aromatic, coniferous tree; and its leaves are used to treat cough, asthma, bronchitis, common cold, nasal congestion, rhinitis, fever, gas, headache, malaria, neuralgia, phthisis, rheumatism, catarrh of the bladder and excessive phlegm. This study was planned to isolate phytoconstituents from these plant materials and to characterize their structures. The leaves of C. trifolia afforded n-hexadecanyl n-octadec-9, 12-dienoate (n- hexadecanyl linoleate, 1), n-heptadecanyl n-octadec-9, 12- dienoate (n-heptadecanyl linoleate, 2), n-docosanyl n-octadec-9, 12- dienoate ( n-docosanyl linoleate, 3), n-docosanyl n-octadec-9-enoate (n-docosanyl oleate, 4), and n-tridecanyl n-octadec-9, 12-dienoate (n-tricosanyl linoleate, 5). The leaves of Abies webbiana produced a new bicyclic sesquiterpenic arabinoside characterized as bezzan-2,4-dien-15-oate 15α-D-arabinopyronoside (6). The structures of isolated phytoconstituents were established on the basis of analysis of spectral data and chemical means.

Keywords: Cayratia trifolia, Abies webbiana, Leaves, Phytoconstituents, Isolation, Characterization.