Effect of Pamamycin-607 on Secondary Metabolite Production byStreptomycesspp.
نویسندگان
چکیده
منابع مشابه
Total synthesis of pamamycin-607.
Pamamycins are 16-membered macrodiolides isolated from Streptomyces alboniger and S. aurantiacus.1 They display autoregulatory, antibiotic, and anionophoric activities2 (Figure 1). Pamamycin-6071b-d is especially interesting for its potent activity2e against gram-positive bacteria (including multiple antibioticresistant strains of Mycobacterium tuberculosis) as well as against phytopathogenic f...
متن کاملStereoselective synthesis of pamamycin-607.
A macrodiolide antibiotic pamamycin-607 was synthesized by joining two hydroxy acid components. Three cis-2, 5-disubstituted tetrahydrofuran rings in the molecule were stereoselectively prepared by radical cyclization reactions of beta-alkoxyvinyl ketone intermediates and a beta-alkoxymethacrylate substrate. The key step of the synthesis is characterized by the predominant threo product formati...
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Background & Aim: Medicinal plants are most valuable and useful sources as productive factors of drugs. Production and extraction of secondary metabolites have a huge economical importance in recent years. Carvone is a compound in Bunium persicum fruit and shoot and, it is one of the wide range varieties of valuable and useful secondary metabolites. Due to limited crop production, usin...
متن کاملEffect of ultrasound on the production of Carvone as a secondary metabolite in callus derived from Bunium persicum Boiss.
Background & Aim: Medicinal plants are most valuable and useful sources as productive factors of drugs. Production and extraction of secondary metabolites have a huge economical importance in recent years. Carvone is a compound in Bunium persicum fruit and shoot and, it is one of the wide range varieties of valuable and useful secondary metabolites. Due to limited crop production, usin...
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this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
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ژورنال
عنوان ژورنال: Bioscience, Biotechnology, and Biochemistry
سال: 2011
ISSN: 0916-8451,1347-6947
DOI: 10.1271/bbb.110251