摘要 |
The invention relates to the method of manufacturing of 7-ethyl-10-[4-(1-piperidino)-1-piperidino]-carbonyloxycamptothecin by condensation of 7-ethyl-10-hydroxycamptothecin with 1-chlorocarbonyl-4-piperidinopiperidine hydrochloride in a polar aprotic solvent in the presence of 4-dimethylaminopyridine.
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