2h q compound xxx 1 h nmr 300 mhz dmso d 6 u03b4 9 85 1h d 7 5 2h d 7 05 2h d 2 45 3h m 1 9 2h t 1 7 6h m 1 4 4h m 0 9 3h dd compound xxxiii 1 h nmr 300 mhz dmso d 6 u03b4 11 95 1h s 2 2 2h m 1 8 2h m 1 4 10 br m 0 83 3h d compound xxxiv anal calcd for c 15 h 19 no 3 c 68 96 h 7 26 n 5 36 found c 68 75 h 7 24 n 5 30 1 h nmr 300 mhz d 2 o u03b4 7 71 2h d 7 33 2h d 2 06 2h d 1 52 6h m 1 01 3h m 0 84 2h m compound xxxv anal calcd for c 14 h 10 no 3 cl c 60 96 h 3 63 n 5 08 found c 60 42 h 3 64 n 4 94 1 h nmr 300 mhz dmso d 6 u03b4 10 85 1h s 7 95 2h d 7 85 2h d 7 55 4h m compound xxxvi anal calcd for c 16 h 21 no 3 c 69 79 h 7 70 n 5 08 found c 69 38 h 7 85 n 4 85 1 h nmr 300 mhz dmso d 6 u03b4 10 0 1h s 7 45 2h d 7 10 2h d 3 18 2h s 2 15 2h d 1 67 6h br m 1 17 3h m 0 95 2h m compound xxxvii 1 h nmr 300 mhz dmso d 6 u03b4 12 25 1h s 9 8 1h s 7 5 2h d 7 15.