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【结 构 式】

【分子编号】20071

【品名】4-[[(2,4-diamino-6-pteridinyl)methyl]amino]benzoic acid

【CA登记号】

【 分 子 式 】C14H13N7O2

【 分 子 量 】311.3032

【元素组成】C 54.02% H 4.21% N 31.5% O 10.28%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(VI)

1) The condensation of 2,4,5,6-tetraaminopyrimidine sulfate (I) with dihydroxyacetone dimer (II) in the presence of cysteine and O2 furnished 2,4-diamino-6-(hydroxymethyl)pteridine (III). Subsequent reaction of (III) with dibromotriphenylphosphorane in dimethylacetamide afforded bromide (IV) which, without isolation, was condensed with 4-aminobenzoic acid (V) in the presence of BaO to give 4-amino-4-deoxypteroic acid (VI). Formylation of (VI) with acetic-formic anhydride yielded formamide (VII), and subsequent activation as the 4-nitrophenyl ester (IX) was carried out upon reaction with bis(4-nitrophenyl)carbonate (VIII). Then Nd-Boc-L-ornithine, after conversion to the corresponding Na,O-bis(trimethylsilyl) derivative (X) by treatment with ClSiMe3 and triethylamine, was condensed with active ester (IX) to furnish amide (XI). Subsequent deprotection of the Boc group of (XI) with cold trifluoroacetic acid provided (XII), which was then condensed with phthalic anhydride (XIII) in the presence of triethylamine in N-methylpyrrolidinone, yielding the hemiphthaloyl amide (XIV). Finally, the formamide function was hydrolyzed with aqueous NaOH at r.t. to provide the target compound, after chromatographic separation of some phthaloyl-hydrolyzed byproduct.

1 Rosowsky, A.; et al.; Methotrexate analogues. 26. Inhibition of dihydrofolate reductase and folypolyglutamate synthetase activity and in vitro tumor cell growth by methotrexate and aminopterin analogues containing a basic amino acid side chain. J Med Chem 1986, 29, 655.
2 Rosowsky, A.; et al.; Methotrexate analogues. 25. Chemical and biological studies on the gamma-tert-butyl esters of methotrexate and aminopterin. J Med Chem 1985, 28, 5, 660.
3 Rosowsky, A.; et al.; Methotrexate analogues. 33. Ndelta-Acyl-Nalpha-(4-amino-4-deoxypteroyl)-L-ornithine derivatives: Synthesis and in vitro antitumor activity. J Med Chem 1988, 31, 1332-7.
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) 19522 2,4,6-triamino-5-pyrimidinylamine; 2,4,5,6-pyrimidinetetramine 1004-74-6 C4H8N6 详情 详情
(II) 20067 2,5-bis(hydroxymethyl)-1,4-dioxane-2,5-diol 89727-88-8 C6H12O6 详情 详情
(III) 20068 (2,4-diamino-6-pteridinyl)methanol 945-24-4 C7H8N6O 详情 详情
(IV) 20069 6-(bromomethyl)pyrido[3,2-d]pyrimidine-2,4-diamine; 2-amino-6-(bromomethyl)pyrido[3,2-d]pyrimidin-4-ylamine C8H8BrN5 详情 详情
(V) 20004 p-aminobenzoic acid; 4-aminobenzoic acid 150-13-0 C7H7NO2 详情 详情
(VI) 20071 4-[[(2,4-diamino-6-pteridinyl)methyl]amino]benzoic acid C14H13N7O2 详情 详情
(VII) 20072 4-[[(2,4-diamino-6-pteridinyl)methyl](formyl)amino]benzoic acid C15H13N7O3 详情 详情
(VIII) 20073 bis(4-nitrophenyl) carbonate;bis(4-nitrophenyl) carbonate;4,4'-Dinitrodiphenyl carbonate;Carbonic acid,bis(4-nitrophenyl) ester;Di-4-nitrophenylcarbonate;Di-p-nitrophenyl carbonate;p,p'-Dinitrodiphenylcarbonate 5070-13-3 C13H8N2O7 详情 详情
(IX) 20074 4-nitrophenyl 4-[[(2,4-diamino-6-pteridinyl)methyl](formyl)amino]benzoate C21H16N8O5 详情 详情
(X) 20075 trimethylsilyl (2S)-5-[(tert-butoxycarbonyl)amino]-2-[(trimethylsilyl)amino]pentanoate C16H36N2O4Si2 详情 详情
(XI) 20076 (2S)-5-[(tert-butoxycarbonyl)amino]-2-([4-[[(2,4-diamino-6-pteridinyl)methyl](formyl)amino]benzoyl]amino)pentanoic acid C25H31N9O6 详情 详情
(XII) 20077 (2S)-5-amino-2-([4-[[(2,4-diamino-6-pteridinyl)methyl](formyl)amino]benzoyl]amino)pentanoic acid C20H23N9O4 详情 详情
(XIII) 11900 2-Benzofuran-1,3-dione;1,2-Benzenedicarboxylic Anhydride;1,2-BENZENE DICARBOXYLIC ACID ANHYDRIDE;1,2-BENZENEDICARBONIC ACID, ANHYDRIDE;1,3-DIOXOPHTHALAN;1,3-ISOBENZOFURANDIONE;o-phthalic anhydride; Phthalic anhydride 85-44-9 C8H4O3 详情 详情
(XIV) 20079 2-([[(4S)-4-carboxy-4-([4-[[(2,4-diamino-6-pteridinyl)methyl](formyl)amino]benzoyl]amino)butyl]amino]carbonyl)benzoic acid C28H27N9O7 详情 详情
Extended Information