EXTERNAL FLAVONOIDS FROM HELIOTROPIUM MEGALANTHUM AND H. HUASCOENSE (BORAGINACEAE). CHEMOTAXONOMIC CONSIDERATIONS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Flavonoids as Chemotaxonomic Markers for Erythroxylum ulei

Emanuel L. Johnson3 * and Walter F. Schmidtb a USDA ARS Weed Science Laboratory Bldg 001 Rm. 329 BARC-W Beltsville, MD 20705-2350 USA. Telefax: (301) 504-6491. E-mail: [email protected] b USDA Environmental Chemistry Laboratory, Bldg 12 Beltsville, MD 20705-2350 USA * Author for correspondence and reprint requests Z. Naturforsch. 54c, 881-888 (1999); received April 12/May 18, 1999 Eryth...

متن کامل

Flavonoids as chemotaxonomic markers for Erythroxylum australe.

Methanolic leaf extracts of Erythroxylum australe F. Muell. produced eight O-conjugated flavonoids. Six of the flavonoid aglycones were dihydroisoflavones (all dihydro-orobol derivatives), one a flavanone, eriodictyol, and one a flavonol, quercetin. The major glycosides of the flavonoids included mono-glucosyl-rhamnosyls and dirhamnosyl-glucosides with either 3, 5, 7 or 3', 4' linkage or a comb...

متن کامل

Physical, Chemical and Physico-chemical Control of Heliotropium Indicum Linn., Boraginaceae, Powder and Tincture

The quality control of herbal drugs and their extracts is essential when they are used as raw material for the development of herbal medicines. In this work, several techniques (pharmacopoeial and non-pharmacopoeial) were performed, aiming at establishing quality control parameters of the leaves of Heliotropium indicum L. (Boraginaceae), a shrub popularly known as stinker (fedegoso) in Brazilia...

متن کامل

Heliotropium (Boraginaceae) in the Marquesas Islands (French Polynesia) with description of a new species

During the preparation of the Vascular Flora of the Marquesas Islands a new endemic species of Heliotropium L. (Boraginaceae) has come to light and is described herein: Heliotropiumperlmanii Lorence & W. L. Wagner. It is known only from the island of Eiao and appears most closely related to Heliotropiummarchionicum Decne., also endemic to the Marquesas and known from Nuku Hiva. An amended descr...

متن کامل

Pyrrolizidine Alkaloids from Heliotropium

Investigation of the pyrrolizidine alkaloids of Heliotropium arbainense resulted in the isolation and identification of heliotrine, europine and 7-angelylheliotrine. From H. ovalifolium three alkaloids were isolated: supinine, 7-angelylheliotridine and an alkaloid which was shown to be of the heliotridine monoester type with a dehydrated viridifloric acid.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Boletín de la Sociedad Chilena de Química

سال: 2000

ISSN: 0366-1644

DOI: 10.4067/s0366-16442000000100004