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【结 构 式】

【分子编号】59527

【品名】6-amino-1,3-bis(cyclopropylmethyl)-5-nitroso-2,4(1H,3H)-pyrimidinedione

【CA登记号】

【 分 子 式 】C12H16N4O3

【 分 子 量 】264.2842

【元素组成】C 54.54% H 6.1% N 21.2% O 18.16%

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:(V)

N,N'-Bis(cyclopropylmethyl)urea (II) was prepared by the action of phosgene on cyclopropylmethylamine (I). Cyclization of urea (II) with cyanoacetic acid (III) in hot acetic anhydride produced the 6-aminouracil (IV). Subsequent nitrosation of (IV) by means of sodium nitrite and formic acid afforded the 5-nitroso derivative (V), which was further reduced to the 5,6-diaminouracil (VI) with sodium dithionite. Formylation of diamine (VI), followed by cyclization of the intermediate formamide (VII), gave rise to 1,3-bis(cyclopropylmethyl)xanthine (VIII). Nitration of xanthine (VIII) with HNO3 in acetic acid yielded the 8-nitro derivative (IX), which was finally reduced to the corresponding amine employing either tin and HCl or sodium dithionite.

1 Maschler, H.; Spicer, B.A.; Smith, H. (GlaxoSmithKline plc); Xanthine derivs., process for their preparation and their pharmaceutical use. AU 9052083; EP 0389282; EP 1120417; JP 1990273676; US 5734051; US 5981535; US 6180791; US 6531600 .
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) 59524 Aminomethylcyclopropane; Cyclopropanemethylamine 2516-47-4 C4H9N 详情 详情
(II) 59525 N,N'-bis(cyclopropylmethyl)urea C9H16N2O 详情 详情
(III) 12591 Cyanoacetic Acid; 2-Cyanoacetic acid 372-09-8 C3H3NO2 详情 详情
(IV) 59526 6-amino-1,3-bis(cyclopropylmethyl)-2,4(1H,3H)-pyrimidinedione C12H17N3O2 详情 详情
(V) 59527 6-amino-1,3-bis(cyclopropylmethyl)-5-nitroso-2,4(1H,3H)-pyrimidinedione C12H16N4O3 详情 详情
(VI) 59528 5,6-diamino-1,3-bis(cyclopropylmethyl)-2,4(1H,3H)-pyrimidinedione C12H18N4O2 详情 详情
(VII) 59529 6-amino-1,3-bis(cyclopropylmethyl)-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinylformamide C13H18N4O3 详情 详情
(VIII) 59530 1,3-bis(cyclopropylmethyl)-3,7-dihydro-1H-purine-2,6-dione C13H16N4O2 详情 详情
(IX) 59531 1,3-bis(cyclopropylmethyl)-8-nitro-3,7-dihydro-1H-purine-2,6-dione C13H15N5O4 详情 详情
Extended Information