Two new anthraquinone derivatives from H. S. Lo.

Two new anthraquinone derivatives sapranquinones A and B ( and ) together with two known biogenetically related anthraquinone derivatives ( and ) were isolated from the stems of H. S. Lo.

[Mechanisms of Fufang Shixiao Formula for Experimental Primary Dysmenorrhea].

Objective To observe the roles of Fufang Shixiao Formula (FFSXF) in regulating prostaglandin E₂ (PGE₂) , prostaglandin F₂ alpha (PGF₂α) , and β-endorphin. peptide (β-EP) in rats with primary dysmenorrhea, and to explore its mechanisms for treating primary dysmenorrhea. Methods Primary dysmenorrheal rat model was induced by Estradiol Benzoate combined oxytocin.