Isolation and Synthesis of Dibenzocyclooctadiene Lignans: (±)‐Schizandrin and Its Analogues
作者:Jae‐Chul Jung、Ikhlas A. Khan、Young‐Whan Choi
DOI:10.1080/00397910600639612
日期:2006.8
Abstract Simple isolation of (±)‐schizandrin (1) and preparation of its analogues (6–8) via acylation of (±)‐schizandrin (1) are described. The key strategy in the synthesis involves the catalytic acylation reaction of 1 with several acylating reagents.
Structure-Activity Relationships of Lignans from Schisandra chinensis as Platelet Activating Factor Antagonists.
作者:Im Seon LEE、Keun Young JUNG、Sei Ryang OH、Si Hyung PARK、Kyung Seop AHN、Hyeong-Kyu LEE
DOI:10.1248/bpb.22.265
日期:——
structure-activity relationships of lignans from Schisandra chinensis and their derivatives as plateletactivatingfactor (PAF) antagonists. Strong activity was shown in lignans without an ester group at C-6, a hydroxyl group at C-7 or a methylene dioxy moiety and with an R-biphenyl configuration. 6(7)-Dehydroschisandrol A, a derivative of schisandrol A, showed the highest activity (IC50, 2.1x10(-6) M) in this
Two new dibenzocyclooctadiene lignans, benzoylgomisin U and tigloylgomisin O were isolated from the fruits of Schisandra sphenanthera together with known lignans, gomisin U and epigomisin O. Their structures were determined by chemical and spectral studies. The structure of isoschizandrin was also revised by advanced chemical and spectral studies.
IKEYA, YUKINOBU;SUGAMA, KO;OKADA, MINORU;MITSUHASHI, HIROSHI, PHYTOCHEMISTRY, 30,(1991) N, C. 975-980