Design, Synthesis and Biological Activity of N-Sulfonyl Aromatic Amide Derivatives

Fifteen novel N-sulfonyl aromatic amide derivatives were designed and synthesized, and the structures were characterized by ~1H-andC-NMR, EA and HRMS. The crystal structures of compounds I-8 and I-9 were obtained from X-ray diffraction: I-8 is of triclinic system, Mr = 372.35, space group P2/n with a = 7.9151(10), b = 8.5637(11), c = 12.2022(15) ?, β = 86.865(2)o, V = 807.09(18) ?~3, Z = 2, F(000) = 384, D= 1.532 g/cm~3, the final R = 0.0408 and wR = 0.1068 for 2836 unique reflections with 2435 observed ones(I > 2σ(I)). I-9 belongs to triclinic system, M= 407.39, space group P2/n, with a = 8.4911(8), b = 8.6053(9), c = 14.5808(15) ?, β = 77.1190(10)o, V = 995.44(17) ?~3, Z = 2, F(000) = 416, D= 1.359 g/cm~3, the final R = 0.0567 and wR = 0.1779 for 3475 unique reflections with 2392 observed ones(I > 2σ(I)). The preliminary bioassay results indicated that the target compounds showed weak nematicidal activity, while compound I-5 displayed good fungicidal activity against Colletotrichum capsici with the inhibition rate of 61.7%.