JPS51146497A - Process for preparing pyrido (1,2-a)pyrimidinone derivatives - Google Patents

Process for preparing pyrido (1,2-a)pyrimidinone derivatives

Info

Publication number
JPS51146497A
JPS51146497A JP50071057A JP7105775A JPS51146497A JP S51146497 A JPS51146497 A JP S51146497A JP 50071057 A JP50071057 A JP 50071057A JP 7105775 A JP7105775 A JP 7105775A JP S51146497 A JPS51146497 A JP S51146497A
Authority
JP
Japan
Prior art keywords
lower alkyl
pyrimidinone derivatives
pyrido
preparing pyrido
derivatives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP50071057A
Other languages
Japanese (ja)
Inventor
Hironobu Sato
Hiroshi Fujita
Hiroshi Takagi
Katsuo Kamoshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sankyo Co Ltd
Original Assignee
Sankyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sankyo Co Ltd filed Critical Sankyo Co Ltd
Priority to JP50071057A priority Critical patent/JPS51146497A/en
Publication of JPS51146497A publication Critical patent/JPS51146497A/en
Pending legal-status Critical Current

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  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

PURPOSE: Pyrido [1, 2-a] phrimidinone derivatives of formula I [where R1 and R2 are H, lower alkyl or halogen; R3 is lower alkyl or phenyl when n is 0 and R3 is hydroxy when n is l; R4 is H or lower alkyl and R5 is lower alkyl and they may be linked together with the neighbouring N-atom to form a (substituted)cyclic amino group] and their acid adducts are new.
COPYRIGHT: (C)1976,JPO&Japio
JP50071057A 1975-06-12 1975-06-12 Process for preparing pyrido (1,2-a)pyrimidinone derivatives Pending JPS51146497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50071057A JPS51146497A (en) 1975-06-12 1975-06-12 Process for preparing pyrido (1,2-a)pyrimidinone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50071057A JPS51146497A (en) 1975-06-12 1975-06-12 Process for preparing pyrido (1,2-a)pyrimidinone derivatives

Publications (1)

Publication Number Publication Date
JPS51146497A true JPS51146497A (en) 1976-12-16

Family

ID=13449501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50071057A Pending JPS51146497A (en) 1975-06-12 1975-06-12 Process for preparing pyrido (1,2-a)pyrimidinone derivatives

Country Status (1)

Country Link
JP (1) JPS51146497A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070053A2 (en) 1981-07-15 1983-01-19 Janssen Pharmaceutica N.V. Novel bicyclic pyrimidin-5-one derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070053A2 (en) 1981-07-15 1983-01-19 Janssen Pharmaceutica N.V. Novel bicyclic pyrimidin-5-one derivatives
US4443451A (en) * 1981-07-15 1984-04-17 Janssen Pharmaceutica N.V. Bicyclic pyrimidin-5-one derivatives

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