| abstract |
(57) [Summary] General formula (I) [In the formula, an asterisk represents an asymmetric carbon; R 1 , R 2 and R 3 may be the same or different; Halogen, C 1-4 alkyl group, C 1-4 alkoxy, phenyl or benzyl, or R 1 , R 2 and R 3 together with the carbon atoms at the 5 and 6 positions are C 4- 6 rings are formed; R 4 and R 5 may be the same or different and each is hydrogen, a C 1-12 alkyl group, a benzhydryl group, an optionally substituted aralkyl group or a substituted group. Is an alkyl group, Cy is an optionally substituted ring system, and X is -O-, -S-, (a), (b) -C 1-4 alkyl or (c)-. Is a phenyl] medicinal methylguanidine derivative represented by: |