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Wednesday, 4 September 2019

Pretomanid

Pretomanid.svg
Pretomanid

read syn  https://newdrugapprovals.org/2019/09/04/pretomanid-%e3%83%97%e3%83%ac%e3%83%88%e3%83%9e%e3%83%8b%e3%83%89/

The combined organic extracts were washed with brine, dried (Na2SO4), filtered, and concentrated. Chromatography (75% EtOAc/hexanes) followed by recrystallization (i-PrOH/hexanes) affords PA-824 (1) (2.41 g, 62%) as a crystalline solid. Mp 150−151 °C (lit.(11a) mp 149−150); Rf 0.2 (75% EtOAc/hexanes); ee >99.9% as determined by chiral SFC (see the Supporting Information);
 1H NMR (500 MHz, d6-DMSO) δ 8.09 (s, 1H), 7.48 (d, J = 8.6 Hz, 2H), 7.39 (d, J = 8.2 Hz, 2H), 4.81−4.62 (m, 3H), 4.51 (d, J = 11.9 Hz, 1H), 4.39−4.19 (m, 3H);
 13C NMR (126 MHz, d6-DMSO) δ 148.7, 148.1, 143.0, 138.3, 130.4, 122.0, 120.0, 119.8, 69.7, 68.8, 67.51, 47.73;
IR [CH2Cl2 solution] νmax (cm−1) 2877, 1580, 1543, 1509, 1475, 1404, 1380, 1342, 1281, 1221, 1162, 1116, 1053, 991, 904, 831, 740;
HRMS (ESI-TOF) calcd for C14H12F3N3O5 359.0729, found 359.0728.





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