Affiliation:
1. Department of Chemistry, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
2. Department of Chemistry, Federal College of Education, Okene, P.M.B 1062 Kogi State, Nigeria
3. Department of Chemistry, Kaduna State University, P.M.B. 2339, Tafawa Balewa way, Kaduna, Nigeria
Abstract
Manual agitation on ultrasonic assisted extraction process, fractionation, isolation and purification afforded 4,8,12,16-tetramethylheptadecan-4-olide (1) along with 11 compounds 2-12 i.e., squalene (2), phytyl palmitate (3), lupeol (4), taraxasterol (5), myristic acid (6), palmitic acid (7), campesterol (8), stigmasterol (9), λ-sitosterol (10), stigmastan-3, 5-diene (11) and stigmasta-5,22-diene-3-ol acetate (12). Their structures were elucidated spectroscopically (2D NMR, IR, GC-MS and 1D NMR). The optimal conditions for high yield of extracts were obtained at 45 °C, after 35 min and solvent ratio 50:50 mL for 83.01 % yield; which was applied on agita-sonication process for bulk sample extraction of D. pinnata leaves with single solvent at a time. Thus, this work provides alternative method to
overcome large sample extraction for phyto-constituents of isolation of 4,8,12,16-tetramethylheptadecan-4-olide (1) with ten other compounds from this specie pinnata and
genius Deinbollia except stigmasterol (9).
Publisher
Asian Journal of Chemistry
Cited by
2 articles.
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