Citation: Xi Ping PAN, De Quan YU, Kuo Hsiung LEE. THE STRUCTURAL ELUCIDATION AND ABSOLUTE CONFIGURATIONS OF TWO NEW POLYOXYGENATED CYCLOHEXENES FROM UVARIA GRANDIFLORA ROXB.[J]. Chinese Chemical Letters, ;1996, 7(3): 241-244. shu

THE STRUCTURAL ELUCIDATION AND ABSOLUTE CONFIGURATIONS OF TWO NEW POLYOXYGENATED CYCLOHEXENES FROM UVARIA GRANDIFLORA ROXB.

a Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050;
b Natural Products Laboratory, Division of Medicinal Chemistry and Natural Products, School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599

Received Date: 4 September 1995

Fund Project: We would like to thank Prof. Song Wan-Zhi for identification of the plant, Dr Chang Jun-Biao for measurements of CD and UV spectra and Dr Ding Ping-Yu for kind help to the hydrogenation.

Two new polyoxygenated cyclohexenes,named uvarigranol E(Ⅰ) and F(Ⅶ),were isolated from the rhizome of Uvaria grandiflora.On the basis of spectral analysis and chemical derivatizations, including preparation of Mosher esters,the structures of Ⅰ and Ⅶ were established as 1R-acetoxymethyl-1,2S-dihydroxy-3R,6S-dibenzoyloxy-cyclohex-4-ene and 1R-hydroxymethyl-1,2S-dihydroxy-3R,6S-dibenzoyloxy-cyclohex-4-ene.
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