| 摘要 |
<p>PCT No. PCT/HU85/00068 Sec. 371 Date Jul. 21, 1986 Sec. 102(e) Date Jul. 21, 1986 PCT Filed Nov. 15, 1985 PCT Pub. No. WO86/03202 PCT Pub. Date Jun. 5, 1986.The invention relates to new compounds of the Formula I <IMAGE> (I) wherein R2 stands for hydrogen or C1-4 alkyl; and R3 represents C1-4 alkyl or a group of the Formula R4-(CH2)n- wherein n is 1 or 2; R4 represents C1 to C4 alkoxy-carbonyl or a group of the Formula II <IMAGE> (II) and R6 and R7 stand for hydrogen or C1-4 alkoxy; or R2 and R3 together may form a group of the Formula -(CH2)2-O-CH2)2- with the proviso that R2 and R3 do not both stand for methyl, and salts thereof and a process for the preparation of the same.</p> |
