Coumarin and its derivatives, scopoletine, artemetime, crizosplenentine, crizosplenole were isolated from chloroform extract of the leaves of Artemisia annua L. of Vietnam. Their structures have been elucidated by spectroscopic methods.
coumarin ; Plants, Medicinal ; Medicine, Traditional

Research by …..method combined with block spectrum. High content of Artemisia ketone is in essential oil of Bungaria, almost no have in essential oil of Viet Nam. In bloom period, essential oil content of Artemisia annual L in Viet Nam only attained 0,1-0,2%, meanwhile Bungari’s attained 0,5-0,8% (reckon follow fresh weight). That showed Artermisia annual essential oil of Viet Nam no has significant meaning in economic and reality.
Artemisia ; Chemistry ; Oils, Volatile

In Vietnam and Bulgaria, accumulation of essential oils of Artemisia annua L. depending on the period of it's growth, was investigated. The content change of compound is significant with 3 phases: Phase 1 - From tree began growth to first 6 months, phase 2 - from second month to fourth month, phase 3 - from fifth month to sixth month (the tree is in flower). Concentration of artemisia annua L. is highest at phase 3 when the tree is in flower
Oils, Volatile ; Artemisia ; plants

Background: Continuation of previous study of screening traditional medicinal plants with anti-diabetic effect, the hypoglycemic effect of glue extracted from Fructus Lycii which was named HPD was study. Objective: to investigate the hypoglycemic effect of HPD on diabetic mice caused by different doses of streptozocine. Subjects and methods: causing diabetes by streptozocine at difference doses was used to collect glucose intolerance mice, mild diabetic mice and severe diabetic mice. The effect of HPD p.o. at several doses was evaluated after 3 days of use. Results: By oral allocation with the dose of 500 and 1.000mg/kg body-weight for 3 days, HPD inhibited increasing blood glucose in streptozocine-induced glucose intolerance mice (intraperitoneal STZ 100 mg/kg). HPD 1000 mg/kg body weight had the potent hypoglycemic effect on streptozocine-induced diabetic mice, reverse the blood glucose self control ability of mild streptozicine-induced diabetic mice (STZ 120 mg/kg), meanwhile can not stop a hyperglycemic effect of high dose of STZ (STZ 180 mg/kg). Conclusion: HPD has the potent anti-hyperglycemic effect on streptozocine -induced diabetic rats. Anti-hyperglycemic of HPD is indirect under present of insulin\r\n', u'\r\n', u'\r\n', u'
Cornus ; Mice ; Inbred NOD ; Streptozocine ;