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.)
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.)
Aska Pharmaceutical Co Ltd
Original Assignee
Grelan Pharmaceutical 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 Grelan Pharmaceutical Co LtdfiledCriticalGrelan Pharmaceutical Co Ltd
Priority to JP14026375ApriorityCriticalpatent/JPS5265297A/en
Publication of JPS5265297ApublicationCriticalpatent/JPS5265297A/en
PURPOSE: 8-Substituted-xanthins of formula I(R1,R2 are H, lower alkyl; R3 is lower alkyl;R4 is OH, lower alkylamino, arylamino);for example, 8(N-pyridinium)-caffeine iodide and 8-(N-pyridinium)-theobromine iodide.
COPYRIGHT: (C)1977,JPO&Japio
JP14026375A1975-11-251975-11-25Synthesis of 8-substituted xanthins
PendingJPS5265297A
(en)