Potassium Hydroxide → (E)-3-{3-[2-((2RS,5SR)-2-tert-butoxycarbonyl-5-phenyl-1-pyrrolidinyl)-2-oxoethyl]ureido}cinnamic-acid

HRID 975943Notes

Reaction equation

HRID 975943 reaction equation
[C:1]([O:5][C:6]([CH:8]1[CH2:12][CH2:11][CH:10]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[N:9]1[C:19](=[O:38])[CH2:20][NH:21][C:22](=[O:37])[NH:23][C:24]1[CH:25]=[C:26]([CH:34]=[CH:35][CH:36]=1)/[CH:27]=[CH:28]/[C:29]([O:31]CC)=[O:30])=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH-].[K+]>CO.O>[C:1]([O:5][C:6]([CH:8]1[CH2:12][CH2:11][CH:10]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[N:9]1[C:19](=[O:38])[CH2:20][NH:21][C:22](=[O:37])[NH:23][C:24]1[CH:25]=[C:26]([CH:34]=[CH:35][CH:36]=1)/[CH:27]=[CH:28]/[C:29]([OH:31])=[O:30])=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 2

HCID 14797Potassium HydroxideHCID 86750515ethyl (E)-3-{3-[2-((2RS,5SR)-2-tert-butoxycarbonyl-5-phenyl-1-pyrrolidinyl)-2-oxoethyl]ureido}cinnamate

Product 1

HCID 19967985(E)-3-{3-[2-((2RS,5SR)-2-tert-butoxycarbonyl-5-phenyl-1-pyrrolidinyl)-2-oxoethyl]ureido}cinnamic-acidYield 28.6%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

By proceeding in a fashion similar to that described in Example 9, but starting from 3.7 g of ethyl (E)-3-{3-[2-((2RS,5SR)-2-tert-butoxycarbonyl-5-phenyl-1-pyrrolidinyl)-2-oxoethyl]ureido}cinnamate in solution in 60 cm3 of methanol and 0.4 g of potassium hydroxide dissolved in 20 cm3 of water and after treatment, 1 g of (E)-3-{3-[2-((2RS,5SR)-2-tert-butoxycarbonyl-5-phenyl-1-pyrrolidinyl)-2-oxoethyl]ureido}cinnamic-acid is obtained [proton NMR (250 MHz, DMSO D6, δ in ppm, J in Hz), 2 rotamers at room temperature, preponderant rotamer description, general description valid for the other products of the series: 1.5 (bs, 9H, (CH3)3 ; 1.9 and 2.2 (2m, 4H, H in position 3 and 4 on pyrrolidine); 3.2 and 3.9 (ABX, 2H, CH2N); 4.35 (dd, 1H, H in position 2 on pyrrolidine); 5.20 (dd, 1H, H in position 5 on pyrrolidine); 6.30 (dd, 1H, NH); 6.4 (bd, 1H, J=15, CH= trans); 7.1 to 7.7 (m, 10H, aromatic and CH= trans); (s, 1H, NH). Infrared spectrum (KBr), characteristic bands in cm-1 : 3380, 3075, 3030, 3700 to 2250 with a maximum at 2475, 2980, 2935, 2875, 1735, 1705, 1695, 1640, 1610, 1590, 1560, 1495, 1450, 1430, 1395, 1370, 1315, 1250, 1225, 1155, 985, 910, 890, 860, 840, 790, 760, 705, 685].

Sources & evidence

ORD record
ord-4d8bdcb7f1784add902ca47d16ce0138
Source dataset
uspto-grants-1997_03
Patent number
US05610144

Reaction notes

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