Trifluoroacetic acid → HCID 118379580, compound

HRID 708376Notes

Reaction equation

HRID 708376 reaction equation
C([O:5][C:6](=[O:46])[C:7]([O:10]/[N:11]=[C:12](/[C:33]1[N:34]=[C:35]([NH:38]C(OC(C)(C)C)=O)[S:36][CH:37]=1)\[C:13]([NH:15][C@H:16]1[C@@H:19]([CH2:20][N:21]2[CH:26]=[CH:25][CH:24]=[CH:23][C:22]2=[O:27])[N:18]([S:28]([OH:31])(=[O:30])=[O:29])[C:17]1=[O:32])=[O:14])([CH3:9])[CH3:8])(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH2:38][C:35]1[S:36][CH:37]=[C:33](/[C:12](=[N:11]/[O:10][C:7]([CH3:9])([CH3:8])[C:6]([OH:46])=[O:5])/[C:13](=[O:14])[NH:15][C@H:16]2[C@@H:19]([CH2:20][N:21]3[CH:26]=[CH:25][CH:24]=[CH:23][C:22]3=[O:27])[N:18]([S:28]([OH:31])(=[O:29])=[O:30])[C:17]2=[O:32])[N:34]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118379600HCID 118379600, compound

Product 1

HCID 118379580HCID 118379580, compoundYield 20.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Followed the general procedure for the acid mediated deprotection using (3S,4R)-3-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-2-oxo-4-((2-oxopyridin-1(2H)-yl)methyl)azetidine-1-sulfonic acid (61 mg, 0.089 mmol), DCM (891 μL) and TFA (412 μl, 5.35 mmol). The crude residue purified by reverse phase prep HPLC (XSelect CSH, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 60 mL/min), affording the title compound (9.6 mg, 19%) as a white powder. LCMS: Rt=0.57 min, m/z=529.1 (M+1) Method 2m_acidic_polar; 1H NMR (400 MHz, D2O) δ 7.59 (d, J=6.7 Hz, 1H), 7.56-7.48 (m, 1H), 7.05 (s, 1H), 6.50 (d, J=9.0 Hz, 1H), 6.39 (t, J=6.7 Hz, 1H), 5.30 (d, J=5.9 Hz, 1H), 4.47 (dd, J=14.5, 2.7 Hz, 1H), 4.07 (dd, J=14.5, 8.6 Hz, 1H), 1.37 (s, 3H), 1.36 (s, 3H).

Workup

  1. customThe crude residue purified by reverse phase prep HPLC (XSelect CSH, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 60 mL/min)

Sources & evidence

ORD record
ord-cb4995ccbb814e8da312b0520ebed0ba
Source dataset
uspto-grants-2015_11
Patent number
US09174978B2

Reaction notes

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