| abstract |
Novel antitumor sulfonamide and sulfonic ester derivatives each having a tricyclic hetero ring, represented by general formula (I), and a process for producing the same, wherein G represents a 5- or 6-membered aromatic ring; L represents O or NR¹, wherein R¹ represents hydrogen or lower alkyl; and M represents a tricyclic structure selected from the members (a), (b), (c), (d), (e), (f), wherein rings A and B represent each a 5- or 6-membered unsaturated ring; X represents NR² (wherein R² represents hydrogen or lower alkyl) or NHCO; Y represents O, S(O) n , CR³R⁴, CO, NR⁵, CHR⁶CHR⁷, CR⁸=CR⁹, NR¹⁰CO, N=CR¹¹, OCHR¹², S(O) n CHR¹³ or NR¹⁴CHR¹⁵; and Z represents N or CR¹⁶, wherein n represents 0, 1 or 2; R³-R¹³, R¹⁵ and R¹⁶ represent each hydrogen or lower alkyl; and R¹⁴ represents hydrogen, lower alkyl or lower acyl. |