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KMID : 0620720000060020061
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Natural Product Sciences
2000 Volume.6 No. 2 p.61 ~ p.65
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Metabolites of Marine Algae Collected from Karachi - coasts of Arabian Sea
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Muhammad Shaiq Ali
Viqar Uddin Ahmad/Muhammad Jahangir/Muhammad Saleem/Muhammad Kashif Pervez/Shaista Hameed
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Abstract
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The ethanolic extracts of marine green, brown and red algae collected from Karachi coasts of Arabian Sea afforded a new enol-derivative of N-acylsphingosine named as coelarthenol (1) from Coelarthrum muelleri, two new glucose-derivatives named: botryenal (2) and botryenol (3) from Botryocladia leptopoda, α-tocopherol quinone (4) from Codium iyengarii, β-sitosterol and hexadecanoic acid from Stokeyia indica. The known constituents (4, β-sitosterol & hexadecanoic acid) have not been reported so far from their corresponding sources and the structures were determined through spectroscopic methods, whereas, the structures of new constituents (1-3) were elucidated with the aid of selective HMBC experiments. The phytotoxicity of 4 was also monitored.
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