1. Hz, 41 (dd, 3 J=12.3 Hz, 3 J= 1458 (s, 1H)20 (m, 2H) ; 1.38 (t, 2 J=11.2 Hz, 1H); 0.87 (s, 9H) 13 C NMR (DMSO-d 6 , ppm): ??165, 1H) ; 2.68 (d, 3 J=16.3 Hz, 1H), p.5083

1. Hz, 12 (m, 1H) ; 1.50 (t, 3 J=12.5 Hz, 1H) ; 0.89 (s, 9H) 13 C NMR (acetone-d 6 , ppm): ??165.1 ; 149

1. Hz, 25 (dd, 3 J= 12.0 Hz, 2 J= 15.4 Hz, 1H)03 (s, 1H), 1H, vol.2, issue.0, pp.89-102

H. Nmr, 33 (m, 2H)27 (s, 1H), 1H). 13 C NMR (CDCl, pp.7-91

H. Nmr, 1H)58 (m, 2H)42 (m, 5H)64 (s, 1H), 75 (d, 2 J=14.2 Hz, 1H) ; 2.38 (d, 2 J=16.4 Hz, 1H), p.1

1. Hz, 85 (t, 3 J=14.2 Hz, 1H) ; 1.43 (t, 3 J=11.4 Hz, 1H) ; 0.84 (s, 9H)