Phytochemistry p. 2809 - 2812 (1983)
Update date:2022-09-26
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BAAS, WIM J.
From the wax of old leaves of Hoya lacunosa was isolated a mixture of 4(23)-saturated seco-ring-A triterpene acid methyl esters.One of these compounds was identified as the β-amyrin derivative 5-isopropyl-10(2-methoxy-carbonylethyl)-des-A-olean-12-en (dihydronyctanthic acid methyl ester), while another compound was a raraxerol derivative 5-isopropyl-10(2-methoxycarbonylethyl)-des-A-olean-14-en.Two other constituents were probably derived from α-amyrin and taraxasterol, respectively.Key Word Index-Hoya lacunosa; Asclepiadaceae; leaf wax; 3,4-seco-pentacyclic triterpenoid acid methyl ester; dihydronyctanthic acid methyl ester.
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