Propizepine

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Propizepine
Clinical data
Trade namesDepressin, Vagran
Routes of
administration		Oral
ATC code
  • none
Legal status
Legal status
  • In general: ℞ (Prescription only)
Identifiers
  • 6-(2-dimethylaminopropyl)-11H-pyrido[3,2-c][1,5]benzodiazepin-5-one
ECHA InfoCard
100.030.629 Edit this at Wikidata
Chemical and physical data
FormulaC17H20N4O
Molar mass296.374 g·mol−1

Propizepine (brand names Depressin, Vagran) is a tricyclic antidepressant (TCA) used in France for the treatment of depression which was introduced in the 1970s.[1][2][3][4]

Synthesis

Propizepine synthesis:[5][6]

Condensation of 2-chloronicotinic acid (2) with o-phenylenediamine (1) leads directly to the tricyclic lactam (3) Although the reaction involves amide formation and nucleophilic aromatic displacement of chlorine, the order of these steps is not known. Alkylation of the anion obtained by treatment if 3 with the 1-chloro-2-dimethylaminopropane (4) affords the antidepressant compound propizepine (5).

The last step in this sequence there is considerable evidence that such alkylations often proceed via the

ethopropazine
, etc.) has established that the product from attack at secondary carbon usually predominates.

What this intends to say is that even if the chloroamine used is actually 1-dimethylamino-2-chloro-propane, although could still be a mixture of products one still gets predominantly the same reaction product as above and not the "iso" product.

References

  1. ISBN 3-88763-075-0
    .
  2. ISBN 0-412-46630-9
    .
  3. ISBN 3-7692-2114-1. {{cite book}}: |work= ignored (help
    )
  4. PMID 996559
    .
  5. ^ Hoffman C, Faure A (1966). "Réactions de l'acide chloro-2-nicotinique". Bull. Soc. Chim. Fr. 7: 2316.
  6. ^ NL 6600065, issued 1966, assigned to Labs. U.P.S.A.