Hydrochloric Acid → HCID 136347272, compound

HRID 601218Notes

Reaction equation

HRID 601218 reaction equation
[O:1]=[S:2]1(=[O:28])[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[NH:5][C:4]([C:12]2[C:17](=[O:18])[N:16]([N:19]=[CH:20][CH:21]([CH3:23])[CH3:22])[C:15]3[CH:24]=[CH:25][S:26][C:14]=3[C:13]=2[OH:27])=[N:3]1.CO.[BH4-].[Li+].Cl>O1CCCC1.O>[O:28]=[S:2]1(=[O:1])[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[NH:5][C:4]([C:12]2[C:17](=[O:18])[N:16]([NH:19][CH2:20][CH:21]([CH3:22])[CH3:23])[C:15]3[CH:24]=[CH:25][S:26][C:14]=3[C:13]=2[OH:27])=[N:3]1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 4148881Lithium borohydrideHCID 136374159HCID 136374159, compound

Product 1

HCID 136347272HCID 136347272, compoundYield 42.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
25 °C

Procedure

The product of Example 269A (0.073 g, 0.18 mmol) in tetrahydrofuran (4 mL) and methanol (0.020 mL, 0.5 mmol) at 0° C. was treated dropwise with a 2.0M solution of lithium borohydride in tetrahydrofuran (0.20 mL, 0.40 mmol). The reaction was stirred at 25° C. for 1 hour, acidified with 1 M hydrochloric acid a pH of approximately 2-4, diluted with water (10 mL), and the resulting precipitate was collected by filtration and dried. The crude product was suspended in tetrahydrofuran (10 mL) and adsorbed onto approximately 5 g of silica gel and evaporated. The product was eluted with methanol in chloroform. Product containing fractions were combined and evaporated under vacuum to give the title compound (0.032 g, 42%). MS (ESI−) m/z 417 (M−H)−. The sodium salt of the title compound was prepared according to the procedure of Example 1D. 1H NMR (300 MHz, DMSO-d6) δ ppm 1.01 (d, J=6.62 Hz, 6 H) 1.88 (m, 1 H) 2.83 (s, 2 H) 6.60 (s, 1 H) 7.41 (d, J=4.04 Hz, 1 H) 7.55 (t, J=7.54 Hz, 1 H) 7.65 (d, J=8.46 Hz, 1 H) 7.77 (t, J=7.91 Hz, 1 H) 7.93 (d, J=7.72 Hz, 1 H) 8.35 (d, J=4.78 Hz, 1 H) 14.21 (s, 1 H) 14.82 (s, 1 H).

Workup

  1. filtrationthe resulting precipitate was collected by filtration
  2. customdried
  3. customevaporated
  4. washThe product was eluted with methanol in chloroform
  5. additionProduct containing fractions
  6. customevaporated under vacuum

Sources & evidence

ORD record
ord-e54b9d214ce84a6f89d1ac166746f438
Source dataset
uspto-grants-2011_03
Patent number
US07902203B2

Reaction notes

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