TY - JOUR
T1 - Carbon-13 N.M.R. Lanthanide-induced shift study of some D:A-Friedooleananes
AU - Wazeer, Mohammed I.M.
AU - Kumar, Vijaya
AU - Weeratunga, Gamini
AU - Wijeratna, Dharmassree B.T.
PY - 1984
Y1 - 1984
N2 - Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.
AB - Carbon-13 n.m.r. signal assignments for D:A-friedooleanan-28-ol (1), D:A-friedooleanan-29-ol (2), D:A-friedooleanan-30-ol (3), D:A-friedooleanan-30-al (4), D:A-friedooleanan-21α-ol (5) and 21α- hydroxy-D:A-friedooleanan-3-one (6) are reported. Lanthanide-induced shifts of the hydroxy compounds indicate that the oxygenation in the vicinity of ring E in these molecules does not affect the chair-chair-chair-twistboat-boat conformation proposed for D:A-friedooleananes.
UR - https://www.scopus.com/pages/publications/84882356596
U2 - 10.1071/CH9842571
DO - 10.1071/CH9842571
M3 - Article
AN - SCOPUS:84882356596
SN - 0004-9425
VL - 37
SP - 2571
EP - 2575
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
IS - 12
ER -