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【结 构 式】

【分子编号】35608

【品名】2-(4-[[(6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-5-pyrimidinyl)imino]methyl]phenoxy)acetic acid

【CA登记号】

【 分 子 式 】C19H24N4O5

【 分 子 量 】388.42352

【元素组成】C 58.75% H 6.23% N 14.42% O 20.6%

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:(IV)

Alkylation of 4-hydroxybenzaldehyde (I) with iodoacetic acid in the presence of K2CO3 afforded ether (II). Subsequent condensation of (II) with 5,6-diamino-1,3-dipropyluracil (III) gave imine (IV). Oxidative ring closure by means of FeCl3 in boiling EtOH, with concomitant esterification, furnished xanthine (V). The ethyl ester of (V) was then displaced by hydrazine to yield hydrazide (VI). Finally, condensation of (VI) with dimethylmaleic anhydride (VII) gave rise to the corresponding maleimide.

1 Jacobson, K.A.; et al.; Functionalized congeners of 1,3-dialkylxanthines: preparation of analogues with high affinity for adenosine receptors. J Med Chem 1985, 28, 9, 1334-40.
2 Karton, Y.; Melman, N.; Ji, X.-D.; Jacobson, K.A.; Linden, J.; Kim, Y.-C.; Acyl-hydrazide derivatives of a xanthine carboxylic congener (XCC) as selective antagonists at human A2B adenosine receptors. Drug Dev Res 1999, 47, 4, 178.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
40086 2-iodoacetic acid 64-69-7 C2H3IO2 详情 详情
(I) 13433 4-Hydroxybenzaldehyde; p-Hydroxybenzaldehyde 123-08-0 C7H6O2 详情 详情
(II) 25513 2-(4-Formylphenoxy)acetic acid; 4-Formyl phenoxy acetic acid 22042-71-3 C9H8O4 详情 详情
(III) 14628 5,6-diamino-1,3-dipropyl-2,4(1H,3H)-pyrimidinedione C10H18N4O2 详情 详情
(IV) 35608 2-(4-[[(6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-5-pyrimidinyl)imino]methyl]phenoxy)acetic acid C19H24N4O5 详情 详情
(V) 35609 ethyl 2-[4-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)phenoxy]acetate C21H26N4O5 详情 详情
(VI) 35610 2-[4-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)phenoxy]acetohydrazide C19H24N6O4 详情 详情
(VII) 35611 3,4-dimethyl-2,5-furandione 766-39-2 C6H6O3 详情 详情

合成路线2

该中间体在本合成路线中的序号:(IV)

Alkylation of 4-hydroxybenzaldehyde (I) with iodoacetic acid afforded 4-formylphenoxyacetic acid (II). This was condensed with 5,6-diamino-1,3-dipropyluracil (III) to produce imine (IV), which was oxidatively cyclized to xanthine (V) in the presence of ferric chloride. After activation of (V) as the corresponding acid chloride (VI), coupling with 4-aminobenzonitrile (VII) furnished the title amide.

1 Jacobson, K.A.; et al.; Functionalized congeners of 1,3-dialkylxanthines: preparation of analogues with high affinity for adenosine receptors. J Med Chem 1985, 28, 9, 1334-40.
2 Ji, X.; Kim, Y.-C.; Linden, J.; Jacobson, K.A.; Melman, N.; Anilide derivatives of an 8-phenylxanthine carboxylic congener are highly potent and selective antagonists at human A2B adenosine receptors. J Med Chem 2000, 43, 6, 1165.
3 Kim, Y.-C.; Linden, J.M.; Jocobson, K.A. (University of Virginia); Substd. 8-phenylxanthines useful as antagonists of A2B adenosine receptors. WO 0073307 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
40086 2-iodoacetic acid 64-69-7 C2H3IO2 详情 详情
(I) 13433 4-Hydroxybenzaldehyde; p-Hydroxybenzaldehyde 123-08-0 C7H6O2 详情 详情
(II) 25513 2-(4-Formylphenoxy)acetic acid; 4-Formyl phenoxy acetic acid 22042-71-3 C9H8O4 详情 详情
(III) 14628 5,6-diamino-1,3-dipropyl-2,4(1H,3H)-pyrimidinedione C10H18N4O2 详情 详情
(IV) 35608 2-(4-[[(6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-5-pyrimidinyl)imino]methyl]phenoxy)acetic acid C19H24N4O5 详情 详情
(V) 44758 2-[4-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)phenoxy]acetic acid C19H22N4O5 详情 详情
(VI) 44759 2-[4-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)phenoxy]acetyl chloride C19H21ClN4O4 详情 详情
(VII) 15361 4-Aminobenzonitrile 873-74-5 C7H6N2 详情 详情
Extended Information