Abstract
A new withasteroid has been isolated fromPhysalis viscosa L. — 28-hydroxywithaphysanolide, with mp 234°C, composition C28H38O8. The13C NMR spectra of a number of withasteroids have been investigated. For 28-hydroxywithaphysanolide we propose the structure 4β,14α,17β,20R,28-pentahydroxy-l-oxo-22R-witha-2,5,24-trienolide. The corresponding corrections have been made in the structural formulas of withaphysanolide and physalactone.
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Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 197–207, March–April, 1984.
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Abdullaev, N.D., Maslennikova, E.A., Tursunova, R.N. et al. Withasteroids ofPhysalis. IV. 28-Hydrowithaphysanolide.13C NMR spectrum of 14-α-hydroxywithasteroids. Chem Nat Compd 20, 182–191 (1984). https://doi.org/10.1007/BF00579480
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DOI: https://doi.org/10.1007/BF00579480