Patent number: 6200970
Abstract: A compound of formula I
in which
X means hydrogen or halogen,
Y means —NR3— or —N═,
R1 and R2 are the same or different and mean hydrogen, C1-C6 alkyl, nitro, halogen, the group —NR8R9, —O—C1-4 alkyl, —CF3, OH or C1-6 alkanoyloxy,
R3 means hydrogen, the group —CO—R10, C1-6 alkyl or C3-7 cycloalkyl,
R4 means optionally substituted C1-C6 alkyl,
R5 means hydrogen or
R4 and R5 together mean oxygen,
R6 means C1-4 alkyl,
R8 and R9 are the same or different and mean hydrogen, C1-C6 alkyl or —CO—C1-6 alkyl,
R10 means hydrogen, optionally substituted C1-C6 alkyl, optionally substituted C6-10 aryl, the group —NR11R12, —O—C1-6 alkyl, C3-7 cycloalkyl, C2-6 alkenyl or —O—C3-7 cycloalkyl,
R11 and R12 are the same or different and mean hydrogen, optionally substituted C1-C6 alkyl or optionally substituted C6-10 aryl and
—C...C...
Type:
Grant
Filed:
November 5, 1998
Date of Patent:
March 13, 2001
Assignee:
Schering Aktiengesellschaft
Inventors:
István Ling, Gizella Ábrahám, Sándor Sólyom, Tamás Hámori, István Tarnawa, Pál Berzsenyi, Ferenc Andrási, Emese Csuzdi, Márta Szöllósy, Antal Simay, István Lagi, Katalin Horváth
