Novobiocin II. Die Synthese der 3–O–Carbamoyl-noviose†‡
Novobiocin II. Die Synthese der 3–O–Carbamoyl-noviose†‡
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新生霉素 II。3-O-氨基甲酰-新生糖的合成†‡
DOI:
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发表时间:
1964
期刊:
影响因子:
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通讯作者:
H. Spiegelberg
中科院分区:
文献类型:
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作者:
B. Vaterlaus;J. Kiss;H. Spiegelberg
The synthesis of 3-O-carbamoyl-noviose, the carbohydrate of the antibiotic novobiocin, is described. Starting with D-glucose the synthesis comprises a number of steps (1–5) up to the important intermediate 3,5,6-tri-O-benzyl-2-O-methyl-D-galactono-γ-lactone (5), which was obtained by an intramolecular WALDEN inversion of 3,5,6-tri-O-benzyl-4-O-mesyl-2-O-methyl-D-glucono-N-methylamide (4). Compound 5 shows the correct steric arrangement of the asymmetric centres with respect to noviose. Successive transformations (6–10) led to the synthesis of noviose and finally (9–14) to methyl 3-O-carbamoyl-α-novioside, which was identical with the substance obtained by acid catalysed methanolysis of the antibiotic novobiocin.