• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】61796

【品名】(3S,4S,5R)-5-(hydroxymethyl)-3,4-piperidinediol

【CA登记号】

【 分 子 式 】C6H13NO3

【 分 子 量 】147.17416

【元素组成】C 48.97% H 8.9% N 9.52% O 32.61%

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:(XIV)

The reaction of 2(R)-(acetoxymethyl)-5-methyl-3(E)-hexen-1-ol (I) with MsCl and TEA in dichloromethane gives the mesylate (II), which is treated with NaN3 in hot DMF to yield the azido derivative (III). The hydrolysis of (III) catalyzed by Pseudomonas cepacia affords the azido alcohol (IV), which is reduced with PPh3 in THF/water to provide the aminoalcohol (V). The N-protection of (V) by means of Boc-ON and Et3N gives the carbamate (VI), which is O-protected by means of Tips-Cl and imidazole yielding the silyl ether (VII). The alkylation of the carbamate (VII) with allyl bromide (VIII) and NaH in DMF affords the allyl carbamate (IX), which is submitted to a ring closure metathesis reaction catalyzed by Grubb's catalyst to provide the chiral tetrahydropyridine (X). The desilylation of (X) by means of TBAF in THF gives N-(tert-butoxycarbonyl)-3(R)-(hydroxymethyl)-1,2,3,6-tetrahydropyridine (XI), which is treated with mCPBA in dichloromethane to yield an inseparable diastereomeric mixture of epoxides (XII) + (XIII). Finally, this mixture is treated with either HClO4 in acetone, HCl in ethyl acetate or with refluxing aq. KOH to afford separable mixtures of the target isofagomine and (XIV), one of its diastereomers.

1 Guanti, G.; Riva, R.; Asymmetrized tris(hydroxymethyl)methane as precursor of iminosugars: Application to the synthesis of isofagomine. Tetrahedron Lett 2003, 44, 2, 357.
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) 61784 (2R,3E)-2-(hydroxymethyl)-5-methyl-3-hexenyl acetate C10H18O3 详情 详情
(II) 61785 (2S,3E)-5-methyl-2-{[(methylsulfonyl)oxy]methyl}-3-hexenyl acetate C11H20O5S 详情 详情
(III) 61786 (2R,3E)-2-(azidomethyl)-5-methyl-3-hexenyl acetate C10H17N3O2 详情 详情
(IV) 61787 (2R,3E)-2-(azidomethyl)-5-methyl-3-hexen-1-ol C8H15N3O 详情 详情
(V) 61788 (2R,3E)-2-(aminomethyl)-5-methyl-3-hexen-1-ol C8H17NO 详情 详情
(VI) 61789 tert-butyl (2R,3E)-2-(hydroxymethyl)-5-methyl-3-hexenylcarbamate C13H25NO3 详情 详情
(VII) 61790 tert-butyl (2R,3E)-5-methyl-2-{[(triisopropylsilyl)oxy]methyl}-3-hexenylcarbamate C22H45NO3Si 详情 详情
(VIII) 11463 3-Bromo-1-propene; 3-Bromopropene;allyl bromide 106-95-6 C3H5Br 详情 详情
(IX) 61791 tert-butyl allyl((2R,3E)-5-methyl-2-{[(triisopropylsilyl)oxy]methyl}-3-hexenyl)carbamate C25H49NO3Si 详情 详情
(X) 61792 tert-butyl (3R)-3-{[(triisopropylsilyl)oxy]methyl}-3,6-dihydro-1(2H)-pyridinecarboxylate C20H39NO3Si 详情 详情
(XI) 61793 tert-butyl (3R)-3-(hydroxymethyl)-3,6-dihydro-1(2H)-pyridinecarboxylate C11H19NO3 详情 详情
(XII) 61794 tert-butyl (1R,5R,6S)-5-(hydroxymethyl)-7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate C11H19NO4 详情 详情
(XIII) 61795 tert-butyl (1S,5R,6R)-5-(hydroxymethyl)-7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate C11H19NO4 详情 详情
(XIV) 61796 (3S,4S,5R)-5-(hydroxymethyl)-3,4-piperidinediol C6H13NO3 详情 详情
Extended Information