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【结 构 式】

【分子编号】31075

【品名】2-methyl-3,6,7,8-tetrahydro-4H-cyclopenta[g]quinazolin-4-one

【CA登记号】

【 分 子 式 】C12H12N2O

【 分 子 量 】200.24016

【元素组成】C 71.98% H 6.04% N 13.99% O 7.99%

与该中间体有关的原料药合成路线共 3 条

合成路线1

该中间体在本合成路线中的序号:(V)

The reaction of indan-5-amine (I) with acetic anhydride gives the acetamide (II), which is brominated with Br2 in acetic acid yielding the 6-bromo derivative (III). The reaction of (III) with CuCN in 1-methyl-2-pyrrolidone at 125 C affords the corresponding nitrile (IV), which is cyclized by means of H2O2 and NaOH in hot ethanol/water giving the tricyclic ketone (V). The reaction of (V) with chloromethyl pivalate (A) and potassium tert-butoxide in DMSO yields the pivaloyloxymethyl derivative (VI), which is oxidized with CrO3 and tert-butyl peroxide in dichloromethane affording the diketone (VII) (after chromatographic separation of the undesired regioisomer). The condensation of (VII) with N-(4-aminobenzoyl)-Lglutamic acid diethyl ester (VIII) by means of TsOH in refluxing DME gives the imino derivative (IX), which without isolation, is reduced to the secondary amine (X) (as a diastereomeric mixture) with NaBH3CN in methanol/acetic acid. The alkylation of the secondary amine group of (X) with propargyl bromide (XI) and CaCO3 in hot DMA yields the tertiary amine (XII), which is hydrolyzed and deprotected with first with NaOH in methanol/water, and then with aqueous HCl to provide the target compound as a diastereomeric mixture. Finally, this compound is resolved by a treatment with carboxypeptidase G2 and ZnCl2 in water that hydrolyzes selectively the undesired isomer.

1 Bavetsias, V.; Matusiak, Z.; Melin, C.; Neidle, S.; Marriott, J.H.; Boyle, F.T.; Jackman, A.L.; Chemoenzymatic preparation of the novel antifolate thymidylate synthase inhibitor N-(4-{N-[(6S)-2-methyl-4-oxo-3,4,7,8-tetrahydro-6H-cyclopenta[g]quinazolin-6-yl]-N-(prop-2-ynyl)amino}-benzoyl)-L-glutamic acid and its glutamyl cleavage product. J Chem Soc - Perkins Trans I 1999, 11, 1495.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(A) 16166 chloromethyl pivalate 18997-19-8 C6H11ClO2 详情 详情
(I) 21473 5-indanamine; 2,3-dihydro-1H-inden-5-ylamine 24425-40-9 C9H11N 详情 详情
(II) 21474 N-(2,3-dihydro-1H-inden-5-yl)acetamide C11H13NO 详情 详情
(III) 31073 N-(6-bromo-2,3-dihydro-1H-inden-5-yl)acetamide C11H12BrNO 详情 详情
(IV) 31074 N-(6-cyano-2,3-dihydro-1H-inden-5-yl)acetamide C12H12N2O 详情 详情
(V) 31075 2-methyl-3,6,7,8-tetrahydro-4H-cyclopenta[g]quinazolin-4-one C12H12N2O 详情 详情
(VI) 31076 (2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H22N2O3 详情 详情
(VII) 31077 (2-methyl-4,6-dioxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H20N2O4 详情 详情
(VIII) 31078 diethyl (2S)-2-[(4-aminobenzoyl)amino]pentanedioate; Diethyl N-(4-aminobenzoyl)-L-glutamate 13726-52-8 C16H22N2O5 详情 详情
(IX) 31079 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-3,4,7,8-tetrahydro-6H-cyclopenta[g]quinazolin-6-ylidene)amino]benzoyl]amino)pentanedioate C34H40N4O8 详情 详情
(X) 31080 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)amino]benzoyl]amino)pentanedioate C34H42N4O8 详情 详情
(XI) 11176 3-Bromopropyne; 3-Bromo-1-propyne 106-96-7 C3H3Br 详情 详情
(XII) 31081 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioate C37H44N4O8 详情 详情
(XIII) 31082 (2S)-2-([4-[(2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioic acid C27H26N4O6 详情 详情

合成路线2

该中间体在本合成路线中的序号:(V)

5-Aminoindan (I) was acetylated, and the resulting anilide (II) was brominated in HOAc to afford (III). Displacement of the bromine of (III) with CuCN in N-methylpyrrolidinone at 125 C furnished nitrile (IV), which was cyclized to the desired quinazolinone derivative (V) upon treatment with sodium hydroperoxide. Protection of the NH group of (V) was achieved by alkylation with chloromethyl pivaloate yielding (VI). Benzylic bromination of (VI) with N-bromosuccinimide in the presence of benzoyl peroxide gave bromide (VII). This was condensed with diethyl p-aminobenzoyl-L-glutamate (VIII) by means of CaCO3 to produce adduct (IX). Further alkylation of (IX) with propargyl bromide (X) using CaCO3 provided propargyl amine (XI). Hydrolysis of the ethyl esters and pivaloyloxymethyl protecting group of (XI) with NaOH afforded (XII). The glutamic acid moiety of (XII) was then removed by enzimatic hydrolysis with carboxypeptidase G2 to furnish intermediate (XIII).

1 Bavetsias, V.; Boyle, F.T.; Hennequin, L.F.A.; Marriott, J.H. (AstraZeneca plc; BTG plc); Anti-cancer cpds. containing cyclopentaquinazoline ring. EP 0758328; GB 2290082; JP 1997512812; US 5747499; WO 9530673 .
2 Jackman, A.L.; Melin, C.; Bavetsias, V.; Matusiak, Z.S.; Marriott, J.H.; Kimbel, C.; Boyle, F.T.; Design and synthesis of cyclopenta[g]quinazoline-based antifolates as inhibitors of thymidylate synthase and potential antitumor agents. J Med Chem 2000, 43, 10, 1910.
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) 21473 5-indanamine; 2,3-dihydro-1H-inden-5-ylamine 24425-40-9 C9H11N 详情 详情
(II) 21474 N-(2,3-dihydro-1H-inden-5-yl)acetamide C11H13NO 详情 详情
(III) 31073 N-(6-bromo-2,3-dihydro-1H-inden-5-yl)acetamide C11H12BrNO 详情 详情
(IV) 31074 N-(6-cyano-2,3-dihydro-1H-inden-5-yl)acetamide C12H12N2O 详情 详情
(V) 31075 2-methyl-3,6,7,8-tetrahydro-4H-cyclopenta[g]quinazolin-4-one C12H12N2O 详情 详情
(VI) 31076 (2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H22N2O3 详情 详情
(VII) 41348 (6-bromo-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H21BrN2O3 详情 详情
(VIII) 31078 diethyl (2S)-2-[(4-aminobenzoyl)amino]pentanedioate; Diethyl N-(4-aminobenzoyl)-L-glutamate 13726-52-8 C16H22N2O5 详情 详情
(IX) 31080 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)amino]benzoyl]amino)pentanedioate C34H42N4O8 详情 详情
(X) 11176 3-Bromopropyne; 3-Bromo-1-propyne 106-96-7 C3H3Br 详情 详情
(XI) 31081 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioate C37H44N4O8 详情 详情
(XII) 31082 (2S)-2-([4-[(2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioic acid C27H26N4O6 详情 详情
(XIII) 41349 4-[(2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoic acid C22H19N3O3 详情 详情

合成路线3

该中间体在本合成路线中的序号:(V)

5-Aminoindan (I) was acetylated, and the resulting anilide (II) was brominated in HOAc to afford (III). Displacement of the bromine of (III) with CuCN in N-methylpyrrolidinone at 125 C furnished nitrile (IV), which was cyclized to the desired quinazolinone derivative (V) upon treatment with sodium hydroperoxide. Protection of the NH group of (V) was achieved by alkylation with chloromethyl pivaloate yielding (VI). Benzylic bromination of (VI) with N-bromosuccinimide in the presence of benzoyl peroxide gave bromide (VII). This was condensed with diethyl p-aminobenzoyl-L-glutamate (VIII) by means of CaCO3 to produce adduct (IX). Further alkylation of (IX) with propargyl bromide (X) using CaCO3 provided propargyl amine (XI). Hydrolysis of the ethyl esters and pivaloyloxymethyl protecting group of (XI) with NaOH afforded (XII). The glutamic acid moiety of (XII) was then removed by enzimatic hydrolysis with carboxypeptidase G2 to furnish intermediate (XIII).

1 Boyle, F.; Crook, J.W.; Matusiak, Z.S. (AstraZeneca plc; BTG plc); Tricyclic cpds. with pharmaceutical activity. EP 0667864; GB 2272217; JP 1996505838; US 5789417; WO 9411354 .
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) 21473 5-indanamine; 2,3-dihydro-1H-inden-5-ylamine 24425-40-9 C9H11N 详情 详情
(II) 21474 N-(2,3-dihydro-1H-inden-5-yl)acetamide C11H13NO 详情 详情
(III) 31073 N-(6-bromo-2,3-dihydro-1H-inden-5-yl)acetamide C11H12BrNO 详情 详情
(IV) 31074 N-(6-cyano-2,3-dihydro-1H-inden-5-yl)acetamide C12H12N2O 详情 详情
(V) 31075 2-methyl-3,6,7,8-tetrahydro-4H-cyclopenta[g]quinazolin-4-one C12H12N2O 详情 详情
(VI) 31076 (2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H22N2O3 详情 详情
(VII) 41348 (6-bromo-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-3-yl)methyl pivalate C18H21BrN2O3 详情 详情
(VIII) 31078 diethyl (2S)-2-[(4-aminobenzoyl)amino]pentanedioate; Diethyl N-(4-aminobenzoyl)-L-glutamate 13726-52-8 C16H22N2O5 详情 详情
(IX) 31080 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)amino]benzoyl]amino)pentanedioate C34H42N4O8 详情 详情
(X) 11176 3-Bromopropyne; 3-Bromo-1-propyne 106-96-7 C3H3Br 详情 详情
(XI) 31081 diethyl (2S)-2-([4-[(3-[[(2,2-dimethylpropanoyl)oxy]methyl]-2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioate C37H44N4O8 详情 详情
(XII) 31082 (2S)-2-([4-[(2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoyl]amino)pentanedioic acid C27H26N4O6 详情 详情
(XIII) 41349 4-[(2-methyl-4-oxo-4,6,7,8-tetrahydro-3H-cyclopenta[g]quinazolin-6-yl)(2-propynyl)amino]benzoic acid C22H19N3O3 详情 详情
Extended Information