Diastereomeric diterpenes from Coleus blumei.

نویسندگان

  • C Y Ragas
  • V F Templora
  • J A Rideout
چکیده

The chloroform extract of the air-dried leaves of Coleus blumei afforded a mixture of diastereomers of a new abietane type diterpene whose structures were elucidated by extensive one and two dimensional (ID, 2D) NMR and mass spectrometry. Acetylation of the mixture afforded a single compound. Antimicrobial tests on the diterpene indicate that it is active against Bacillus subtilis, Pseudomonas aeruginosa and Candida albicans.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Antifungal Activity of Some Coleus Species Growing in Nilgiris

The in vitro antifungal activity of solvent extracts of Coleus forskohlii, Coleus blumei and Coleus barbatus were compared by testing against some pathogenic fungi like Aspergillus niger, Aspergillusfumigatus, Aspergillus ruantii, Proteus vulgaris and Candida albicans. The petroleum ether extract of Coleus forskohlii and Coleus barbatus exhibited significant antifungal activity against all the ...

متن کامل

Primary and secondary structure of a new viroid 'species' (CbVd 1) present in the Coleus blumei cultivar 'Bienvenue'

The detection of a viroid in Coleus blumei species in Brazil (1) has prompted us to search for viroids in C. blumei cultivars (cvs) commercially propagated by cuttings for more than 50 years in Germany. 'Return' PAGE (2) of nucleic acid extracts from the cv 'Bienvenue' revealed a band of circular viroid-like RNA molecules. Northern blot analysis (3) with radioactive probes specific for viroids ...

متن کامل

Coleus spp.: Micropropagation and In Vitro Production of Secondary Metabolites

Coleus spp. have long been prized for their colorful foliage, which may combine shades of green, yellow, pink, red and maroon. They are plants for all locations. Besides their ornamental nature, Coleus spp. are also valued in folk medicine. C. blumei Benth., a natural hybrid of several Coleus spp. is an ornamental plant growing all over the world in an enormous number of different cultivars tha...

متن کامل

Two New Enzymes of Rosmarinic Acid Biosynthesis from Cell Cultures of Coleus blumei: Hydroxyphenylpyruvate Reductase and Rosmarinic Acid Synthase

Rosmarinic acid biosynthesis can be stimulated in cell cultures of Coleus blumei by culturing the cells in medium with 4% sucrose. In enzyme extracts of these cells two new enzymes of rosmarinic acid biosynthesis were discovered. Hydroxyphenylpyruvate reductase reduces 4-hydroxyphenylpyruvate and 3,4-dihydroxyphenylpyruvate to 4-hydroxyphenyllactate and 3,4-dihydroxyphenyllactate, respectively,...

متن کامل

اثر بسترهای کشت آلی و معدنی بر ویژگی‌های رویشی و اکوفیزیولوژیک گیاه حسن‌یوسف (Coleus blumei)

Abstract In order to study of the effect of substrates on vegetative and ecophysiological characteristics of coleus plant, coleus cuttings containing two leaves were planted in perlite, cocopeat, peatmoss, compost, 50% perlite + 50% cocopeat, 50% perlite + 50% peatmoss, 50% perlite + 50% compost, 5% cocopeat+50% peatmoss, 50% cocopeat + 50% compost and 50% peatmoss + 50% compost with four repl...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Chemical & pharmaceutical bulletin

دوره 49 7  شماره 

صفحات  -

تاریخ انتشار 2001