A pair of 3-epimeric physalins from Physalis alkekengi L. var. franchetii.
A pair of new 3-epimeric steroids possessing a rare 13,14-seco-16,24-cycloergostane skeleton, 3alpha-methoxy-2,3-dihydro-4,7-didehydrophysalin B (1), and 3beta-methoxy-2,3-dihydro-4,7-didehydrophysalin B (2) were isolated from the 60% EtOH extract of the stems and leaves of Physalis alkekengi L. var. franchetii. Their structures were characterized on the basis of spectral evidence.
Qiu
Li
L
Department of Natural Products Chemistry, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China.
Jiang
Zhi-Hu
ZH
Liu
Hong-Xia
HX
Chen
Li-Xia
LX
Yao
Xin-Sheng
XS
Qiu
Feng
F
D007783:Lactones / Q000737:chemistry*; D015394:Molecular Structure; D032321:Physalis / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012632:Secosteroids / Q000737:chemistry*
C539039:3alpha-methoxy-2,3-dihydro-4,7-didehydrophysalin B; D007783:Lactones; D012632:Secosteroids