TY - JOUR
T1 - Establishment of the structure of gymnemagenin by x-ray analysis and the structure of deacylgymnemic acid
AU - Tsuda, Yoshisuke
AU - Kiuchi, Fumiyuki
AU - Liu, Hong Min
PY - 1989
Y1 - 1989
N2 - The structure of gymnemagenin, the sapogenin of antisweet principle of Gymnema syrvestre, was firmly established as 3β,16β,21β,22α,23,28-hexahydroxy-olean-12-ene by the X-ray analysis of the 3β,23;21β,2???α-di-O-isopropylidene derivative. On the basis of this result, the structure of deacylgymnemic acid was elucidated as the 3-O-β-glucuronide by comparisons of the 13C-NMR spectra.
AB - The structure of gymnemagenin, the sapogenin of antisweet principle of Gymnema syrvestre, was firmly established as 3β,16β,21β,22α,23,28-hexahydroxy-olean-12-ene by the X-ray analysis of the 3β,23;21β,2???α-di-O-isopropylidene derivative. On the basis of this result, the structure of deacylgymnemic acid was elucidated as the 3-O-β-glucuronide by comparisons of the 13C-NMR spectra.
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U2 - 10.1016/S0040-4039(00)95202-X
DO - 10.1016/S0040-4039(00)95202-X
M3 - Article
AN - SCOPUS:0024541055
SN - 0040-4039
VL - 30
SP - 361
EP - 362
JO - Tetrahedron Letters
JF - Tetrahedron Letters
IS - 3
ER -