Diisopropylethylamine → HCID 178460220, compound

HRID 708435Notes

Reaction equation

HRID 708435 reaction equation
[NH2:1][CH2:2][C:3]1[CH:7]=[N:6][N:5]([CH2:8][C@@H:9]2[C@H:12]([NH:13][C:14](=[O:30])/[C:15](=[N:22]\[O:23][C:24]([CH3:29])([CH3:28])[C:25]([OH:27])=[O:26])/[C:16]3[N:17]=[C:18]([NH2:21])[S:19][CH:20]=3)[C:11](=[O:31])[N:10]2[S:32]([OH:35])(=[O:34])=[O:33])[N:4]=1.Cl.C([C:39]([NH2:41])=O)C.CCN(C(C)C)C(C)C>CN(C=O)C>[NH2:21][C:18]1[S:19][CH:20]=[C:16](/[C:15](=[N:22]/[O:23][C:24]([CH3:29])([CH3:28])[C:25]([OH:27])=[O:26])/[C:14]([NH:13][C@@H:12]2[C:11](=[O:31])[N:10]([S:32]([OH:35])(=[O:34])=[O:33])[C@@H:9]2[CH2:8][N:5]2[N:4]=[C:3]([CH2:2][NH:1][CH:39]=[NH:41])[CH:7]=[N:6]2)=[O:30])[N:17]=1

Participants

5

Reactant 3

HCID 81531Diisopropylethylamine2×HCID 21878349Propanamide--hydrogen chloride (1/1)2×HCID 118379967HCID 118379967, compound

Product 1

HCID 178460220HCID 178460220, compoundYield 18%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-(((Z)-(2-(((2R,3S)-2-((4-(aminomethyl)-2H-1,2,3-triazol-2-yl)methyl)-4-oxo-1-sulfoazetidin-3-yl)amino)-1-(2-aminothiazol-4-yl)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid (100 mg, 0.159 mmol) and ethylformamidate hydrochloride (17.4 mg, 0.159 mmol) in DMF (1 mL) was added DIPEA (41 mg, 0.32 mmol). After 2 h of stirring, more ethylformamidate hydrochloride (9.0 mg, 0.082 mmol) and DIPEA (20 mg, 0.16 mmol) was added. After an additional 4 h the solution was concentrated and washed with ether. The crude residue was 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 (15.5 mg, 18%) as mixture of amidine tautomers. LCMS: m/z=556.8 (M−1); 1H NMR (400 MHz, D2O): δ 7.73 (s, 0.4H), 7.65 (s, 0.6H), 7.57 (m, 1H), 6.83 (s, 1H), 5.37 (d, J=5.6 Hz, 1H), 4.80-4.61 (m, 3H assumed; obscured by solvent residual peak) 4.48 (s, 0.4H), 4.45 (s, 0.6H), 1.17 (s, 3H), 1.15 (s, 3H).

Workup

  1. concentrationAfter an additional 4 h the solution was concentrated
  2. washwashed with ether
  3. customThe crude residue was 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-162eaed643f34727a3b1093a3d656256
Source dataset
uspto-grants-2015_11
Patent number
US09174978B2

Reaction notes

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