Figure S42. 13C NMR spectrum of compound 18 (100 MHz, CDCl3). 1H NMR spectrum of compound (400 MHz, Figure S43: 19 Figure S44. 13C NMR spectrum of compound 19 (100 MHz, CDCl3). 1H NMR spectrum of compound (400 MHz, Figure S45: 20 Figure S46. 13C NMR spectrum of compound 20 (100 MHz, CDCl3). Figure S47: 1H NMR spectrum of compound 21(400 MHz, CDCl3). Figure S48. 13C NMR spectrum of compound 21 (100 MHz, CDCl3). Figure S49: 1H NMR spectrum of compound 22(400 MHz, DMSO-d6).
Figure S42. 13C NMR spectrum of compound 18 (100 MHz, CDCl3). Figure S43: 1H NMR spectrum of compound 19 (400 MHz, Figure S44. 13C NMR spectrum of compound 19 (100 MHz, CDCl3). Figure S45: 1H NMR spectrum of compound 20 (400 MHz, Figure S46. 13C NMR spectrum of compound 20 (100 MHz, CDCl3). Figure S47: 1H NMR spectrum of compound 21(400 MHz, CDCl3). Figure S48. 13C NMR spectrum of compound 21 (100 MHz, CDCl3). Figure S49: 1H NMR spectrum of compound 22(400 MHz, DMSO-d6).