TY - JOUR
T1 - Structures of two new phenolic 24-nor-D:A-friedo-oleananes related to zeylasterone
T2 - A partial synthesis of trimethylzeylasterone
AU - Gunaherath, G. M.Kamal B.
AU - Gunatilaka, A. A.Leslie
PY - 1983
Y1 - 1983
N2 - Zeylasteral and desmethylzeylasterone, two new triterpenes from Kokoona zeylanica have been shown to be 2,3-dihydroxy-6,23-dioxo-24-nor-D:A-friedo-oleana-1,3,5(10),7-tetraen-29-oic acid methyl ester (20α) and 2,3-dihydroxy-6-oxo-24-nor-D:A-friedo-oleana-1,3,5(10),7-tetraen23,29-dioic acid (20α), respectively, and have been related to trimethylzeylasterone. A partial synthesis of trimethylzeylasterone starting from pristimerin has been achieved.
AB - Zeylasteral and desmethylzeylasterone, two new triterpenes from Kokoona zeylanica have been shown to be 2,3-dihydroxy-6,23-dioxo-24-nor-D:A-friedo-oleana-1,3,5(10),7-tetraen-29-oic acid methyl ester (20α) and 2,3-dihydroxy-6-oxo-24-nor-D:A-friedo-oleana-1,3,5(10),7-tetraen23,29-dioic acid (20α), respectively, and have been related to trimethylzeylasterone. A partial synthesis of trimethylzeylasterone starting from pristimerin has been achieved.
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U2 - 10.1016/S0040-4039(00)81834-1
DO - 10.1016/S0040-4039(00)81834-1
M3 - Article
AN - SCOPUS:0002815468
SN - 0040-4039
VL - 24
SP - 2025
EP - 2028
JO - Tetrahedron Letters
JF - Tetrahedron Letters
IS - 19
ER -