“…NMR spectrum, , ppm: 20.6 (CH 3 i-Pr); 20.8 (CH 3 i-Pr); 27.6 (6-CH 3 ); 35.8 (C-7); 39.6 (C-4); 58.9 (C-5); 65.9 (CH i-Pr); 69.3 (C-6); 98.7 (C-9); 125.2-127.5 (Ar); 138.2 (C-8); 142.5 (ipso-C); 157.3 (C-3); 171.31 (C=O).t-4-p-Fluorophenyl-3,c-6-dihydroxy-6-methyl-1H-indazole-r-5-carboxylic Acid Isopropyl Ester(9). IR spectrum, cm -1 : 3437, 3267 (OH and NH);1721 (CO group);1619 (C=N). 1 H NMR spectrum,, ppm(J, Hz):0.82 (3H, d, J = 6.1, CH 3 CH);1.09 (3H, d, J = 6.2, CH 3 CH); 1.21 (3H, s, 6-CH 3 ); 2.52 (2H, m, H-5a and H-7a); 2.76 (1H, d, J = 16.1, H-7e); 4.03 (1H, d, J = 10.6, H-4a); 4.42 (1H, s, 6-OH); 4.76 (1H, m, CHCH 3 ); 7.11 7.04 (4H, m, Ar); 8.92 (1H, br.…”