Titlebook: Biosynthesis; David Gottlieb (Professor of Plant Pathology),Paul Book 1967 Springer-Verlag Berlin Heidelberg 1967 biosynthesis.research.sy

Obligatory

Costume

Macrolide Antibiotics,olyenic type such as erythromycin, methymycin, picromycin, magnamycin, etc. Compounds containing a system of more than two conjugated carbon double bonds are classified as polyenes and are not considered in this discussion. Macrolides are produced by different species of . (Table 1). . .. (1961) inv

Lasting

Cycloheximide and Other Glutarimide Antibiotics,cyclohexanone nucleus attached to position 4 of the glutarimide ring through a twocarbon bridge. The individual compounds differ either in substitution or in the degree of unsaturation of the dimethylcyclohexanone nucleus (., 1964; . and ., 1964). The cycloheximide molecule has four assymetric centr

减震

Nystatin,. It is unique, however, in that much of what is known of the structure is due to biosynthetic investigations. The macrolides are characterised by many-membered lactone rings, carrying numerous substituents: methyl groups, hydroxyl groups, unusual sugar, and frequently at least one carbonyl group. T

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Synthetic vs Analytic Geometry for Computersexcretion of these highly efficient and selective iron chelators originated as an evolutionary response of organisms to overcome iron deficiency (., 1957). Most naturally occurring hydroxamates exhibit striking biological activity. Certain hydroxamates, such as ferri-chrome, are potent growth factor

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Outmoded

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Penicillins and Cephalosporins,onic side-chain derived from D-α-aminoadipic acid (., 1962). This substance, which was first named cephalosporin N or synnematin B and later penicillin N, has also been reported to be produced by a . sp. (. and ., 1962) and by . (..., 1960). Following the discovery of penicillin N, it was found that

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Hadacidin,excretion of these highly efficient and selective iron chelators originated as an evolutionary response of organisms to overcome iron deficiency (., 1957). Most naturally occurring hydroxamates exhibit striking biological activity. Certain hydroxamates, such as ferri-chrome, are potent growth factor