Tyler
发表于 2025-3-21 16:50:46
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AXIS
发表于 2025-3-21 23:05:55
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Aromatic
发表于 2025-3-22 01:22:38
Chloramphenicol,..., 1948; . and ., 1948). As shown in Fig. 1a, its structure is D-(—)-threo-2-dichloroacetamido-l-p-nitrophenyl-1,3-propandiol (..., 1949; ..., 1949). The compound is thus relatively simple but interesting, for it is one of the few natural products with both an aryl nitro group and organic halogen.
分散
发表于 2025-3-22 06:54:22
Aspergillic Acid and Related Compounds, (1949a and c) and ., and . (1951) demonstrated that aspergillic acid has the structure shown in Fig. 1. . (1961) found that the optical configuration of the asymmetric carbon atom of the sec-butyl side chain of aspergillic acid was the same as that of carbon 3 of .-isoleucine.
Cardioversion
发表于 2025-3-22 12:04:52
Pyocyanine,y by . and . (1929) who proposed a bimolecular structure for it. Further evidence, summarized by . (1938), indicated that the correct structure is as is shown in Fig. 1. Pyocyanine dissolves in water at neutral or basic pH to give a blue solution, and it is extracted from such solutions with chlorof
修饰语
发表于 2025-3-22 15:54:53
Mitomycins, activity against a variety of microorganisms and Ehrlich ascites tumor cells. Two compounds, designated mitomycin A and mitomycin B, were isolated in crystalline form; however, it was early recognized that several additional biologically ative materials were present in the culture broth. Two years
利用
发表于 2025-3-22 18:59:55
Violacein, to those from later studies of crystalline violacein and it seems likely that the bacterium was a strain now known as .. It is probably significant (see below) that the culture was grown on starch paste and that the pigment was obtained “—d’un petit organisme que se développe assez fréquemment à la
元音
发表于 2025-3-22 21:53:29
Some Acetate Derived Antibiotics,rtiary fungal metabolites is based upon the monumental researches of . (1949) and his coworkers, who over a quarter-century isolated and characterized many of the substances under consideration in this chapter. Structural relationships among certain of these mold products led . and . (1953) to postu
Counteract
发表于 2025-3-23 03:12:37
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椭圆
发表于 2025-3-23 05:37:12
Griseofulvin,2′-en-3,4′-dione (I; R = Cl) is far from easy. The literature abounds with speculation and with statements unsupported by published detailed experimental work; and the assumption has sometimes been made that a partial biosynthetic pathway established for one griseofulvin-producing organism or strain