Platelet-activating factor antagonistic activity and(13)C NMR assignment of pregomisin and chamigrenal fromSchisandra chinensis

Arch Pharm Res. 1997 Dec;20(6):633-6. doi: 10.1007/BF02975223.

Abstract

In the course of searching for PAF receptor antagonists, pregomisin (1) and chamigrenal (2) were isolated from the fruits ofSchizandra chinensis Baill by the bioactivity-guided isolation. Both compounds showed PAF antagonistic activity and the IC(50) values were 4.8x10(-5) M and 1.2x10(-4) M, respectively. In addition, the(13)C NMR assignments of1 and2 using DEPT, HMQC, COLOC and HMBC were reported for the first time.