【结 构 式】 |
【分子编号】64217 【品名】tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-oxopropyl)carbamate 【CA登记号】 |
【 分 子 式 】C22H34N2O5 【 分 子 量 】406.52244 【元素组成】C 65% H 8.43% N 6.89% O 19.68% |
合成路线1
该中间体在本合成路线中的序号:(XXV)The intermediate aldehyde (XXV) has been prepared by two related procedures. Benzylic bromination of o-tolylacetic acid (XIV) employing NBS and AIBN leads to bromo acid (XV), which is further converted into the tert-butyl ester (XVI) upon treatment with isobutylene and sulfuric acid. Bromide group displacement in (XVI) with NaN3 in hot DMF affords azide (XVII). This is then reduced by catalytic hydrogenation to the corresponding primary amine, which can be isolated as the more stable oxalate salt (XVIII). After protection of amine (XVIII) as the N-Boc derivative (XIX), selective reduction of the ester function employing LiAlH4 in cold Et2O gives rise to alcohol (XX). Further bromination of alcohol (XX) to produce (XXI) is accomplished by treatment with CBr4 and PPh3. Bromide (XXI) is condensed with 3-amino-1-propanol (XXII) yielding amino alcohol (XXIII), which is subsequently protected as the di-Boc derivative (XXIV). Swern oxidation of alcohol (XXIV) generates the required aldehyde intermediate (XXV).
【1】 Selnick, H.G.; Newton, R.C.; Newton, C.L.; Barrow, J.C.; Nantermet, P.G. (Merck & Co., Inc.); Thrombin inhibitors. WO 0311222 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XIV) | 64207 | 2-(2-methylphenyl)acetic acid | C9H10O2 | 详情 | 详情 | |
(XV) | 64208 | 2-[2-(bromomethyl)phenyl]acetic acid | C9H9BrO2 | 详情 | 详情 | |
(XVI) | 64209 | tert-butyl 2-[2-(bromomethyl)phenyl]acetate | C13H17BrO2 | 详情 | 详情 | |
(XVII) | 64210 | tert-butyl 2-[2-(azidomethyl)phenyl]acetate | C13H17N3O2 | 详情 | 详情 | |
(XVIII) | 64211 | tert-butyl 2-[2-(aminomethyl)phenyl]acetate | C13H19NO2 | 详情 | 详情 | |
(XIX) | 64212 | tert-butyl 2-(2-{[(tert-butoxycarbonyl)amino]methyl}phenyl)acetate | C18H27NO4 | 详情 | 详情 | |
(XX) | 64213 | tert-butyl 2-(2-hydroxyethyl)benzylcarbamate | C14H21NO3 | 详情 | 详情 | |
(XXI) | 64214 | tert-butyl 2-(2-bromoethyl)benzylcarbamate | C14H20BrNO2 | 详情 | 详情 | |
(XXII) | 18522 | 3-amino-1-propanol | 156-87-6 | C3H9NO | 详情 | 详情 |
(XXIII) | 64215 | tert-butyl 2-{2-[(3-hydroxypropyl)amino]ethyl}benzylcarbamate | C17H28N2O3 | 详情 | 详情 | |
(XXIV) | 64216 | tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-hydroxypropyl)carbamate | C22H36N2O5 | 详情 | 详情 | |
(XXV) | 64217 | tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-oxopropyl)carbamate | C22H34N2O5 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(XXV)In a related synthesis of (XXV) starting from the mono-protected diamine (XXVI), alkylation with ethyl 3-bromopropionate (XXVII) leads to amino ester (XXVIII), which is further protected as the di-Boc derivative (XXIX). Reduction of ester (XXIX) employing LiAlH4 furnishes alcohol (XXIV), which is further oxidized to aldehyde (XXV) under Swern conditions.
【1】 Nantermet, P.G.; Barrow, J.C.; Newton, C.L.; Pellicore, J.M.; Young, M.; Lewis, S.D.; Lucas, B.J.; Krueger, J.A.; McMasters, D.R.; Youwei, Y.; Kuo, L.C.; Vacca, J.P.; Selnick, H.G.; Design and synthesis of potent and selective macrocyclic thrombin inhibitors. 225th ACS Natl Meet (March 23 2003, New Orleans) 2003, Abst MEDI 168. |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XXIV) | 64216 | tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-hydroxypropyl)carbamate | C22H36N2O5 | 详情 | 详情 | |
(XXV) | 64217 | tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-oxopropyl)carbamate | C22H34N2O5 | 详情 | 详情 | |
(XXVI) | 64218 | tert-butyl 2-(2-aminoethyl)benzylcarbamate | C14H22N2O2 | 详情 | 详情 | |
(XXVII) | 29132 | ethyl 3-bromopropanoate | 539-74-2 | C5H9BrO2 | 详情 | 详情 |
(XXVIII) | 64219 | ethyl 3-[(2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl)amino]propanoate | C19H30N2O4 | 详情 | 详情 | |
(XXIX) | 64220 | ethyl 3-[(tert-butoxycarbonyl)(2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl)amino]propanoate | C24H38N2O6 | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号:(XXV)Reductive condensation between aldehyde (XXV) and amine (XIII) in the presence of NaBH(OAc)3 leads to adduct (XXX). The N-Boc protecting groups of (XXX) are then cleaved under acidic conditions yielding tetra-amine (XXXI). Saponification of the ethyl ester group of (XXXI) with LiOH furnishes amino acid (XXXII). Finally, the title compound is obtained by macrocyclization of (XXXII) employing EDC/HOAt as the coupling reagent (1,2).
【1】 Nantermet, P.G.; Barrow, J.C.; Newton, C.L.; Pellicore, J.M.; Young, M.; Lewis, S.D.; Lucas, B.J.; Krueger, J.A.; McMasters, D.R.; Youwei, Y.; Kuo, L.C.; Vacca, J.P.; Selnick, H.G.; Design and synthesis of potent and selective macrocyclic thrombin inhibitors. 225th ACS Natl Meet (March 23 2003, New Orleans) 2003, Abst MEDI 168. |
【2】 Selnick, H.G.; Newton, R.C.; Newton, C.L.; Barrow, J.C.; Nantermet, P.G. (Merck & Co., Inc.); Thrombin inhibitors. WO 0311222 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
(XIII) | 64206 | ethyl 2-[3-{[(1S)-2-amino-1-benzylethyl]amino}-6-chloro-2-oxo-1(2H)-pyrazinyl]acetate | C17H21ClN4O3 | 详情 | 详情 | |
(XXV) | 64217 | tert-butyl 2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl(3-oxopropyl)carbamate | C22H34N2O5 | 详情 | 详情 | |
(XXX) | 64221 | ethyl 2-[3-{[(1S)-1-benzyl-2-({3-[(tert-butoxycarbonyl)(2-{[(tert-butoxycarbonyl)amino]methyl}phenethyl)amino]propyl}amino)ethyl]amino}-6-chloro-2-oxo-1(2H)-pyrazinyl]acetate | C39H55ClN6O7 | 详情 | 详情 | |
(XXXI) | 64222 | ethyl 2-[3-({(1S)-2-[(3-{[2-(aminomethyl)phenethyl]amino}propyl)amino]-1-benzylethyl}amino)-6-chloro-2-oxo-1(2H)-pyrazinyl]acetate | C29H39ClN6O3 | 详情 | 详情 | |
(XXXII) | 64223 | 2-[3-({(1S)-2-[(3-{[2-(aminomethyl)phenethyl]amino}propyl)amino]-1-benzylethyl}amino)-6-chloro-2-oxo-1(2H)-pyrazinyl]acetic acid | C27H35ClN6O3 | 详情 | 详情 |