KR780000237B1 - Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof - Google Patents

Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof

Info

Publication number
KR780000237B1
KR780000237B1 KR7801103A KR780001103A KR780000237B1 KR 780000237 B1 KR780000237 B1 KR 780000237B1 KR 7801103 A KR7801103 A KR 7801103A KR 780001103 A KR780001103 A KR 780001103A KR 780000237 B1 KR780000237 B1 KR 780000237B1
Authority
KR
South Korea
Prior art keywords
benzopyranes
benzopyrano
oxo
carboxy
salts
Prior art date
Application number
KR7801103A
Other languages
Korean (ko)
Inventor
P B Stewart
J Devlin
K Freter
Original Assignee
Boehringer Sohn Ingelheim
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
Priority claimed from KR7301438A external-priority patent/KR780000198B1/en
Application filed by Boehringer Sohn Ingelheim filed Critical Boehringer Sohn Ingelheim
Priority to KR7801103A priority Critical patent/KR780000237B1/en
Application granted granted Critical
Publication of KR780000237B1 publication Critical patent/KR780000237B1/en

Links

KR7801103A 1973-08-29 1978-04-15 Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof KR780000237B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR7801103A KR780000237B1 (en) 1973-08-29 1978-04-15 Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR7301438A KR780000198B1 (en) 1973-08-29 1973-08-29 Process for production of 2-carboxy-4-oxo 4h,1oh-(2)-benzopyrano-(4,3g)-(1)-benzopyranes and their salts
KR7801103A KR780000237B1 (en) 1973-08-29 1978-04-15 Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof

Publications (1)

Publication Number Publication Date
KR780000237B1 true KR780000237B1 (en) 1978-07-01

Family

ID=26625795

Family Applications (1)

Application Number Title Priority Date Filing Date
KR7801103A KR780000237B1 (en) 1973-08-29 1978-04-15 Preparation of 2-carboxy-4-oxo-4h.10h-(2-)-benzopyrano-(4.3g)-(1)-benzopyranes and the salts thereof

Country Status (1)

Country Link
KR (1) KR780000237B1 (en)

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