NEW RACEMI AND OPTICALLY ACTIVE OCTAHYDROINDOLO (2,3-A) TETRA- HYDROPIRANIL (2,3-C) QUINOLIDINE DIESTER DERIVATIVE AND ITS PREPARATION

New intermediate compounds are disclosed of the formula I, Ia wherein R1 and R2 are independently alkyl having 1 to 4 carbon atoms, or acid-addition salts thereof of formula Ib, Ib wherein X represents an acid residue, and a process for the preparation of the intermediate compounds.

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Hauptverfasser: YAYOSU SABOO, IISUTOBAAN BEGEDEISU, YAANOSU SAAPI, JIYORUJIE KARAUSHIYU, KATARIN NOOGURAADEI, BEERA BENKE, CHIYABA SAANTAI, BEERA SUTEFUKOO, KAARUMAAN GURAAFU, ANDORAASU NEMESU, MAARIA FUARUKASHIYU NEE KIRUYAAKU, IDA DEUCHIYUCHIYU NEE YUHAASU, YAANOSHIYU KUREIDORU, JIYUZANNA ARACHIE NEE TEISUCHIYURERU, KATARIN HORUBAATSU NEE BERUKI, YUDEITO MEESAAROSHIYU NEE BURIRU
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Sprache:eng
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Zusammenfassung:New intermediate compounds are disclosed of the formula I, Ia wherein R1 and R2 are independently alkyl having 1 to 4 carbon atoms, or acid-addition salts thereof of formula Ib, Ib wherein X represents an acid residue, and a process for the preparation of the intermediate compounds.