Trifluoroacetic acid → HCID 118379826, compound

HRID 708426Notes

Reaction equation

HRID 708426 reaction equation
[N:1]1[N:2]=[CH:3][N:4]([CH2:6][C@@H:7]2[C@H:10]([NH:11][C:12](=[O:39])/[C:13](=[N:27]\[O:28][C:29]([CH3:38])([CH3:37])[C:30]([O:32]C(C)(C)C)=[O:31])/[C:14]3[N:15]=[C:16]([NH:19]C(OC(C)(C)C)=O)[S:17][CH:18]=3)[C:9](=[O:40])[N:8]2[S:41]([OH:44])(=[O:43])=[O:42])[CH:5]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[N:1]1[N:2]=[CH:3][N:4]([CH2:6][C@@H:7]2[C@H:10]([NH:11][C:12](=[O:39])/[C:13](=[N:27]\[O:28][C:29]([CH3:38])([CH3:37])[C:30]([OH:32])=[O:31])/[C:14]3[N:15]=[C:16]([NH2:19])[S:17][CH:18]=3)[C:9](=[O:40])[N:8]2[S:41]([OH:44])(=[O:42])=[O:43])[CH:5]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118379632HCID 118379632, compound

Product 1

HCID 118379826HCID 118379826, compoundYield 10%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Followed the general procedure for the acid mediated deprotection using (2R,3S)-2-((4H-1,2,4-triazol-4-yl)methyl)-3-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-4-oxoazetidine-1-sulfonic acid (77 mg, 0.117 mmol), DCM (3 mL) and TFA (1 mL, 13.0 mmol) for 2 h. The crude residue 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 (5.6 mg, 10%) as a white powder. LCMS: m/z=500.8 (M−1); 1H NMR (400 MHz, D2O): δ 8.52 (s, 2H), 6.90 (s, 1H), 5.30 (d, J=5.6 Hz, 1H), 4.56 (m, 2H), 4.42 (q, 1H), 1.30 (s, 6H).

Workup

  1. customfor 2 h
  2. customThe crude residue 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-b134c1b4ef4c4f95adc9b6bc3e98acf8
Source dataset
uspto-grants-2015_11
Patent number
US09174978B2

Reaction notes

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