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【结 构 式】

【分子编号】50020

【品名】(4S)-6-chloro-4-(2-cyclopropylethynyl)-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone

【CA登记号】

【 分 子 式 】C22H18ClF3N2O

【 分 子 量 】418.8457096

【元素组成】C 63.09% H 4.33% Cl 8.46% F 13.61% N 6.69% O 3.82%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(VII)

The condensation of 4-chloro-2-(2,2,2-trifluoro-1,1-dihydroxyethyl)aniline (I) with (R)-1-phenylethyl isocyanate (II) at low temperature gives a mixture of the urea (III) and tetrahydroquinazolinone (IV). Without isolation the urea (III) is cyclized to the tetrahydroquinazolinone (IV) by heating at 60 C. The dehydration of (IV) by means of SOCl2 and TEA in toluene affords the quinazolinone (V), which, without isolation, is condensed with the cyclopropylacetylide (VI) in THF to provide the alkylated tetrahydroquinazolinone (VII). Finally, this compound is deprotected from the chiral auxiliary by means of TFA or formic acid.

1 Magnus, N.A.; et al.; A new asymmetric 1,4-addition method: Application to the synthesis of the HIV non-nucleoside reverse transcriptase inhibitor DPC 961. Tetrahedron Lett 2000, 41, 17, 3015.
2 Confalone, P.N.; Magnus, N.A.; Storace, L. (DuPont Pharmaceuticals Co.); Process for the preparation of quinazolinones. WO 0029391 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 50015 1-(2-amino-5-chlorophenyl)-2,2,2-trifluoro-1,1-ethanediol C8H7ClF3NO2 详情 详情
(II) 30212 1-[(1R)-1-isocyanatoethyl]benzene; (1R)-1-phenylethyl isocyanate 33375-06-3 C9H9NO 详情 详情
(III) 50016 N-[4-chloro-2-(2,2,2-trifluoro-1,1-dihydroxyethyl)phenyl]-N'-[(1R)-1-phenylethyl]urea C17H16ClF3N2O3 详情 详情
(IV) 50017 (4S)-6-chloro-4-hydroxy-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C17H14ClF3N2O2 详情 详情
(V) 50018 6-chloro-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-2(3H)-quinazolinone C17H12ClF3N2O 详情 详情
(VI) 50019 bromo(2-cyclopropylethynyl)magnesium C5H5BrMg 详情 详情
(VII) 50020 (4S)-6-chloro-4-(2-cyclopropylethynyl)-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C22H18ClF3N2O 详情 详情

合成路线2

该中间体在本合成路线中的序号:(XVI)

DPC-961 (I) can be obtained by several different related ways: 3) Condensation of 4-chloro-2-(2,2,2-trifluoro-1,1-dihydroxyethyl)aniline (XI) with (R)-1-phenylethyl isocyanate (XII) by means of HCl at low temperature gives a mixture of the urea (XIII) and tetrahydroquinazolinone (XIV). Without isolation, urea (XIII) is cyclized to the tetrahydroquinazolinone (XIV) by heating at 60 C. Dehydration of (XIV) by means of SOCl2 and Et3N in toluene affords the quinazolinone (XV), which, without isolation, is condensed with the Grignard reagent bromomagnesium cyclopropylacetylide (XVI) in THF to provide the alkylated tetrahydroquinazolinone (XVII). Finally, compound (XVII) is deprotected from the chiral auxiliary by means of TFA or formic acid. 4) Condensation of 2'-amino-5'-chloro-2,2,2-trifluoroacetophenone (II) with (R)-1-phenylethyl isocyanate (XII) by means of either HCl in THF or TMSCl/THF in toluene, followed by heating at 60-65 C, provides the tetrahydroquinazolinone (XIX). Dehydration of (XIX) with SOCl2 and Et3N or NMM in toluene affords quinazolinone (XV), which, without isolation, is condensed with the Grignard reagent chloromagnesium cyclopropylacetylide (XX) to give the tetrahydroquinazoline (XVII). Finally, this compound is treated with TFA or formic acid as before.

1 Sorbera, L.A.; Rabasseda, X.; Silvestre, J.S.; Leeson, P.A.; DPC-083. Drugs Fut 2002, 27, 4, 331.
2 Magnus, N.A.; et al.; A new asymmetric 1,4-addition method: Application to the synthesis of the HIV non-nucleoside reverse transcriptase inhibitor DPC 961. Tetrahedron Lett 2000, 41, 17, 3015.
3 Confalone, P.N.; Magnus, N.A.; Storace, L. (DuPont Pharmaceuticals Co.); Process for the preparation of quinazolinones. WO 0029391 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 36613 (4S)-6-chloro-4-(2-cyclopropylethynyl)-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C14H10ClF3N2O 详情 详情
(II) 16572 1-(2-amino-5-chlorophenyl)-2,2,2-trifluoro-1-ethanone C8H5ClF3NO 详情 详情
(X) 50015 1-(2-amino-5-chlorophenyl)-2,2,2-trifluoro-1,1-ethanediol C8H7ClF3NO2 详情 详情
(XI) 30212 1-[(1R)-1-isocyanatoethyl]benzene; (1R)-1-phenylethyl isocyanate 33375-06-3 C9H9NO 详情 详情
(XII) 50016 N-[4-chloro-2-(2,2,2-trifluoro-1,1-dihydroxyethyl)phenyl]-N'-[(1R)-1-phenylethyl]urea C17H16ClF3N2O3 详情 详情
(XIII) 50017 (4S)-6-chloro-4-hydroxy-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C17H14ClF3N2O2 详情 详情
(XIV) 50018 6-chloro-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-2(3H)-quinazolinone C17H12ClF3N2O 详情 详情
(XV) 50019 bromo(2-cyclopropylethynyl)magnesium C5H5BrMg 详情 详情
(XVI) 50020 (4S)-6-chloro-4-(2-cyclopropylethynyl)-3-[(1R)-1-phenylethyl]-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C22H18ClF3N2O 详情 详情
(XVII) 52671 N-[4-chloro-2-(2,2,2-trifluoroacetyl)phenyl]-N'-(1-phenylethyl)urea C17H14ClF3N2O2 详情 详情
(XVIII) 52670 chloro(2-cyclopropylethynyl)magnesium C5H5ClMg 详情 详情
(XIX) 52672 6-chloro-4-hydroxy-3-(1-phenylethyl)-4-(trifluoromethyl)-3,4-dihydro-2(1H)-quinazolinone C17H14ClF3N2O2 详情 详情
Extended Information