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【结 构 式】

【分子编号】26509

【品名】(2S,3R,4Z)-2-azido-4-octadecene-1,3-diol

【CA登记号】

【 分 子 式 】C18H35N3O2

【 分 子 量 】325.49492

【元素组成】C 66.42% H 10.84% N 12.91% O 9.83%

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)

Wittig reaction of 2,4-O-benzylidene-D-threose (I) with the phosphorane derived from tetradecyl triphenyl phosphonium salt (II) provided the trans olefin (III). After conversion of hydroxyl group of (III) into the corresponding triflate, displacement with NaN3 yielded azide (IV) with inversion of configuration. Acid hydrolysis of the benzylidene acetal of (IV) gave diol (V). Then, selective protection of the primary hydroxyl group with tert-butyldimethylsilyl chloride produced silyl ether (VI). Subsequent benzoylation of the remaining hydroxyl group of (VI) gave benzoate ester (VII). The silyl protecting group of (VII) was then removed using tetra n-butylammonium fluoride in THF to give azido alcohol (VIII). This was coupled with tetraacetyl-D-galactosyl bromide (IX) to give the corresponding galactopyranoside (X) as an epimeric mixture. After chromatographic separation of the major beta-anomer, removal of the acetyl protecting groups with sodium methoxide yielded (XI).

1 Banville, J.; Martel, A.; Aruffo, A.A. (Bristol-Myers Squibb Co.); Sulfated beta-glycolipid derivs. as cell adhesion inhibitors. EP 0671406; JP 1995285985; US 5565433 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
10463 Benzoyl chloride 98-88-4 C7H5ClO 详情 详情
(I) 26505 (2S,4S,5R)-5-hydroxy-2-phenyl-1,3-dioxane-4-carbaldehyde C11H12O4 详情 详情
(II) 26506 triphenyl(tetradecyl)phosphorane C32H45P 详情 详情
(III) 26507 (2S,4R,5R)-4-[(Z)-1-pentadecenyl]-2-phenyl-1,3-dioxan-5-ol C25H40O3 详情 详情
(IV) 26508 (2S,4R,5S)-4-[(Z)-1-pentadecenyl]-2-phenyl-1,3-dioxan-5-yl azide C25H39N3O2 详情 详情
(V) 26509 (2S,3R,4Z)-2-azido-4-octadecene-1,3-diol C18H35N3O2 详情 详情
(VI) 26510 (2S,3R,4Z)-2-azido-1-[[tert-butyl(dimethyl)silyl]oxy]-4-octadecen-3-ol C24H49N3O2Si 详情 详情
(VII) 26511 (1R,2Z)-1-((1S)-1-azido-2-[[tert-butyl(dimethyl)silyl]oxy]ethyl)-2-hexadecenyl benzoate C31H53N3O3Si 详情 详情
(VIII) 26512 (1R,2Z)-1-[(1S)-1-azido-2-hydroxyethyl]-2-hexadecenyl benzoate C25H39N3O3 详情 详情
(IX) 26513 (2R,3R,4S,5R,6R)-3,5-bis(acetoxy)-2-[(acetoxy)methyl]-6-bromotetrahydro-2H-pyran-4-yl acetate 3068-32-4 C14H19BrO9 详情 详情
(X) 26514 (1R,2Z)-1-[(1S)-1-azido-2-([(3R,4S,5S,6R)-3,4,5-tris(acetoxy)-6-[(acetoxy)methyl]tetrahydro-2H-pyran-2-yl]oxy)ethyl]-2-hexadecenyl benzoate C39H57N3O12 详情 详情
(XI) 26515 (1R,2Z)-1-((1S)-1-azido-2-[[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy]ethyl)-2-hexadecenyl benzoate C31H49N3O8 详情 详情
Extended Information