• Chemical composition ofCalotropis gigantea - Part I. Wax and resin components of the latex

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      https://www.ias.ac.in/article/fulltext/seca/018/03/0145-0159

    • Keywords

       

      Calcium Oxalate; Benzene Solution; Mixed Melting Point; Isovaleric Acid; Triterpene Alcohol

    • Abstract

       

      The latex ofCalotropis gigantea contains (1) resinols as esters of steamvolatile fatty acids (acetic and isovaleric), (2) cardiac poisons similar to usharin and (3) calcium oxalate. The resinol portion consists mainly of two new alcohols, α-calotropeol and β-calotropeol in almost equal quantities and minor amounts of β-amyrin. The important properties of the calotropeols have been studied. It is suggested that ‘Calosterol’ of Basu and Nath should be a mixture of resinols contaminated with cardiac poisons. The recent report of Hesseet al. that the milky latex ofCalotropis procera contains only α-lactucerol as its esters with steam-volatile fatty acids is discussed.

    • Author Affiliations

       

      P Bhaskara Rama Murti1 2 T R Seshadri1

      1. Department of Chemistry, Andhra University, Waltair
      2. Laboratories of the Board of Scientific and Industrial Research, Delhi
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