Dipyridodiazepinone deriv. 15 → 5,11-Dihydro-11-ethyl-2-[(S)-2-(hydroxymethyl)pyrrolidin-1-yl]-4-methyl-6H-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one

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The title compound, m.p. 238°-240° C., was synthesized from 2-chloro-5,11-dihydro-11-ethyl-4-methyl-6H-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one and (S)-(+)-2-pyrrolidinemethanol using procedures analogous to those described above, except that the mixture was heated in a pressure bottle at 170° C. for 3 hrs, and the product was crystallized from chloroform/hexane.

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