Current quality standards of Andrographis Herba of different countries and regions / 中国中药杂志

Andrographis Herba is a commonly used plant medicine, and has been recorded in pharmacopeias of different countries. However, there are some differences in the quality standards. Based on this, this paper compare the quality standards of Andrographis Herba between Chinese Pharmacopoeia, Hong Kong Chinese Materia Medica Standards, United States Pharmacopoeia, European Pharmacopoeia and Indian Pharmacopoeia, including origin, botanical characteristics, identification(microscopic identification and chromatographic identification), content determination, specific test(such as impurities, loss on drying, extractives, pesticides, heavy metals, mycotoxins, and other items) and storage requirements, so as to provide a reference for studying international quality standards of Andrographis.

Lipophilic small molecular compounds from human placenta / 国际药学研究杂志

Objective To nvestigate he ipophilic constituents of human placenta. Methods The compounds were separaed and purified by various column chromatography(silica gel,Sephadex LH-20) and heir structures were established by spectroscopic methods and X-ray diffraction analysis. Rusults Twenty-one compounds were solated from human placenta. Their structures were dentified as cyclo(Leu-Ala) (1),cyclo(Leu-Val) (2),cyclo(Leu-Pro) (3),cyclo(Val-Pro) (4),cyclo(Phe-Leu) (5),caffeine(6), uracil(7), thymine (8), 2'-0-methyluridine (9), 2'-deoxyuridine (10), cholesterol (11), 16a-hydroxyprogesterone (12), 16a-hydroxytestosterone(13),estriol(14),20(fi)-hydroxypregn