Trifluoroacetic acid → HCID 118379368, compound

HRID 708417Notes

Reaction equation

HRID 708417 reaction equation
C([O:5][C:6](=[O:51])[C:7]([O:10]/[N:11]=[C:12](/[C:38]1[N:39]=[C:40]([NH:43]C(OC(C)(C)C)=O)[S:41][CH:42]=1)\[C:13]([NH:15][C@@H:16]1[C:19](=[O:20])[N:18]([S:21]([O-:24])(=[O:23])=[O:22])[C@@H:17]1[CH2:25][N:26]1[CH:30]=[C:29]([C:31]2[CH:36]=[CH:35][N+:34]([CH3:37])=[CH:33][CH:32]=2)[N:28]=[N:27]1)=[O:14])([CH3:9])[CH3:8])(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH2:43][C:40]1[S:41][CH:42]=[C:38](/[C:12](=[N:11]/[O:10][C:7]([C:6]([OH:51])=[O:5])([CH3:8])[CH3:9])/[C:13]([NH:15][C@@H:16]2[C:19](=[O:20])[N:18]([S:21]([O-:24])(=[O:22])=[O:23])[C@@H:17]2[CH2:25][N:26]2[CH:30]=[C:29]([C:31]3[CH:32]=[CH:33][N+:34]([CH3:37])=[CH:35][CH:36]=3)[N:28]=[N:27]2)=[O:14])[N:39]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118379618HCID 118379618, compound

Product 1

HCID 118379368HCID 118379368, compoundYield 41.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Followed the general procedure for the acid mediated deprotection using (2R,3S)-3-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-2-((4-(1-methylpyridin-1-ium-4-yl)-1H-1,2,3-triazol-1-yl)methyl)-4-oxoazetidine-1-sulfonate (24 mg, 0.032 mmol), DCM (1.2 mL) and TFA (0.3 mL, 3.9 mmol). The crude residue was purified by reverse phase prep HPLC (XBridge, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 1 mL/min), affording the title compound (7.9 mg, 41%) as a white solid. LCMS: m/z=592.0 (M−1); 1H NMR (400 MHz, D2O): δ 8.76 (s, 1H), 8.62 (d, J=6.8 Hz, 2H), 8.19 (d, J=6.4 Hz, 2H), 6.76 (s, 1H), 5.42 (d, J=5.2 Hz, 1H), 4.98-4.81 (m, 2H; partially obscured by residual solvent peak), 4.66-4.54 (m, 1H assumed: obscured by residual solvent peak), 4.22 (s, 3H), 1.30 (s, 3H), 1.27 (s, 3H).

Workup

  1. customThe crude residue was purified by reverse phase prep HPLC (XBridge, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 1 mL/min)

Sources & evidence

ORD record
ord-cab5ca896f0942ff835950e170b3e209
Source dataset
uspto-grants-2015_11
Patent number
US09174978B2

Reaction notes

Loading…