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【结 构 式】 
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【分子编号】21003 【品名】2-(aminooxy)-1-ethanamine; 2-(aminooxy)ethylamine 【CA登记号】 |
【 分 子 式 】C2H8N2O 【 分 子 量 】76.0984 【元素组成】C 31.57% H 10.6% N 36.81% O 21.02% |
合成路线1
该中间体在本合成路线中的序号：(II)By reaction of p-chloro-5-methoxyvalerophenone (I) with 2-aminooxyethylamine (II) in refluxing pyridine-ethanol.
合成路线2
该中间体在本合成路线中的序号：(C)Compound can be prepared in three different ways all starting from p-trifluoromethyl-5-methoxy-valerophenone (I): 1) By condensation of (I) with 2-aminooxyethylamine dihydrochloride in refluxing pyridine ethanol (C). 2) The reaction of (I) with hydroxylamine as usual yields the corresponding oxime (II), which is then condensed with 2-chloroethylamine (B) by means of KOH in DMF. 3) The reaction of the oxime (II) with Li and ethylene oxide (A) in absolute ethanol affords the O-(2-hydroxyethyl)oxime (III), which is esterified with mesyl chloride by means of triethylamine in methylene chloride giving the O-(2-mesyloxyethyl)oxime (IV). Finally, this compound is treated with NH3 in methanol at 100 C in a pressure vessel.
| 【1】 Welle, H.B.A.; Claassen, V.; Oxime ethers having anti-depressive activity. DE 2610886; FR 2304336; GB 1535226; JP 51125345; NL 7503310; US 4085225 . |
| 【2】 Thorpe, P.J.; Castaner, J.; Fluvoxamine. Drugs Fut 1978, 3, 4, 288. |
| 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) | 10393 | Oxirane; Ethylene oxide | 75-21-8 | C2H4O | 详情 | 详情 |
| (B) | 33455 | 2-chloro-1-ethanamine; 2-chloroethylamine | C2H6ClN | 详情 | 详情 | |
| (I) | 33451 | 5-methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone | C13H15F3O2 | 详情 | 详情 | |
| (II) | 33452 | 5-methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone oxime | C13H16F3NO2 | 详情 | 详情 | |
| (III) | 33453 | 5-methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone O-(2-hydroxyethyl)oxime | C15H20F3NO3 | 详情 | 详情 | |
| (IV) | 33454 | 2-[([(E)-5-methoxy-1-[4-(trifluoromethyl)phenyl]pentylidene]amino)oxy]ethyl methanesulfonate | C16H22F3NO5S | 详情 | 详情 | |
| (C) | 21003 | 2-(aminooxy)-1-ethanamine; 2-(aminooxy)ethylamine | C2H8N2O | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(X)Prasterone (I) was protected as the silyl ether (II) upon treatment with tert-butyldimethylsilyl chloride and pyridine, and its ketone group was then reduced to alcohol (III) with NaBH4 in Et2O-EtOH. Hydroboration of the olefinic double bond of (III), followed by oxidative treatment with sodium perborate yielded the dihydroxy steroid (IV), which was protected as the diacetate (V) by esterification with Ac2O in pyridine. The silyl ether group of (V) was subsequently removed by treatment with tetrabutylammonium fluoride in THF, and the deprotected 3-b alcohol (VI) was oxidized to ketone (VIII) with 2-iodoxybenzoic acid (VII) in DMSO. Saponification of the acetate esters of (VIII) with NaOH in aqueous MeOH furnished the dihydroxyandrostanone (IX). Then, reaction of the ketone group of (IX) with O-(2-aminoethyl)hydroxylamine-2HCl (X) gave oxime (XI). Finally, oxidation of the remaining hydroxyl groups of (XI) with 2-iodoxybenzoic acid (VII) afforded the title androstanedione.
| 【1】 De Munari, S.; Folpini, E.; Frigerio, M.; Melloni, P.; Serra, F.; Sputore, S. (Sigma-Tau Industrie Farmaceutiche Riunite SpA); New 6-hydroxy and 6-oxo-andro-stane derivs. active on the cardiovascular system and pharmaceutical compsns. containing the same. DE 19633349; EP 0825197; JP 1998077292 . |
| 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) | 11713 | Dehydroepiandrosterone;prasterone；(3S,8R,9S,10R,13S,14S)-3-Hydroxy-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta[a]phenanthren-17-one | 53-43-0 | C19H28O2 | 详情 | 详情 |
| (II) | 20995 | (3S,8R,9S,10R,13S,14S)-3-[[tert-butyl(dimethyl)silyl]oxy]-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta[a]phenanthren-17-one | C25H42O2Si | 详情 | 详情 | |
| (III) | 20996 | (3S,8R,9S,10R,13S,14S,17S)-3-[[tert-butyl(dimethyl)silyl]oxy]-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol | C25H44O2Si | 详情 | 详情 | |
| (IV) | 20997 | (3S,5S,6S,8R,9S,10R,13S,14S,17S)-3-[[tert-butyl(dimethyl)silyl]oxy]-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene-6,17-diol | C25H46O3Si | 详情 | 详情 | |
| (V) | 20998 | (3S,5S,6S,8R,9S,10R,13S,14S,17S)-17-(acetoxy)-3-[[tert-butyl(dimethyl)silyl]oxy]-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-6-yl acetate | C29H50O5Si | 详情 | 详情 | |
| (VI) | 20999 | (3S,5S,6S,8R,9S,10R,13S,14S,17S)-17-(acetoxy)-3-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-6-yl acetate | C23H36O5 | 详情 | 详情 | |
| (VII) | 21000 | 2-iodosylbenzoic acid | 304-91-6 | C7H5IO3 | 详情 | 详情 |
| (VIII) | 21001 | (5S,6S,8R,9S,10R,13S,14S,17S)-17-(acetoxy)-10,13-dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-6-yl acetate | C23H34O5 | 详情 | 详情 | |
| (IX) | 21002 | (5S,6S,8R,9S,10R,13S,14S,17S)-6,17-dihydroxy-10,13-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one | C19H30O3 | 详情 | 详情 | |
| (X) | 21003 | 2-(aminooxy)-1-ethanamine; 2-(aminooxy)ethylamine | C2H8N2O | 详情 | 详情 | |
| (XI) | 21004 | (5S,6S,8R,9S,10R,13S,14S,17S)-6,17-dihydroxy-10,13-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one O-(2-aminoethyl)oxime | C21H36N2O3 | 详情 | 详情 |