| 摘要 |
The invention relates to a novel method for producing [4S-(4alpha, 12aalpha)]-9-amino-4-(dimethyl- amino)-1,4,4a,5,5a,6,11,12a-octahydro-3,20,12,12a- tetrahydroxy-1,22-dioxo-2-naphthacenecarboxamide, here- inafter called 9-amino-6-demethyl-6-deoxytetra- cycline, which compound is a valuable intermediate for synthesis of tetracyclines.
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