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Synthesen in der Isochinolinreihe Zur Konfiguration von (−)-1-(p-Chlorphenäthyl)-2-methyl-6,7-dimethoxy-1,2,3,4-tetrahydro-isochinolin

✍ Scribed by A. Brossi; F. Burkhardt


Publisher
John Wiley and Sons
Year
1961
Tongue
German
Weight
515 KB
Volume
44
Category
Article
ISSN
0018-019X

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✦ Synopsis


(−)‐1‐(p‐Chlorostyryl‐2‐acetyl‐6,7‐dimethoxy‐1, 2,3,4‐tetrahydro‐isoquinoline (IX), which has the same configuration as the analgetic substance (−)‐Ro 4‐1778/1 (I), has been correlated with (+)‐calycotomine (V) of known absolute configuration. Thus the absolute configuration of (−)‐I as (R)‐l‐(p‐chlorophenethyl)‐2‐methyl‐6,7‐dimethoxy‐1,2,3,4‐tetrahydro‐isoquinoline is proved. This result is supported by rotatory dispersion studies and by the rotation shifts in solvents of different polarity.


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✍ A. Brossi; F. Schenker; R. Schmidt; R. Banziger; W. Leimgruber 📂 Article 📅 1966 🏛 John Wiley and Sons 🌐 German ⚖ 628 KB

kIEL\'E'I'ICA CHIMICA ACTA dentlich beschriebenen substituierten Benzaldehyd I [5] [6] 2, leicht zuganglich3). Wir zogen deshalb zur Darstellung yon XI aus I1 die folgenden, im Formelschema 1 wiedergegebenen Reaktionsfolgen in Betracht : Cyclisierung des N-Formylderivates 111, Quartamisierung des er