Phosphorus pentachloride → benzhydryl (6R)-3-(chloromethyl)-7-[[(2Z)-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethoxy]imino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

HRID 615788ノート

反応式

HRID 615788 の反応式
[C:1]([O:5][C:6]([CH2:8][O:9]/[N:10]=[C:11](/[C:15]1[N:16]=[C:17]([NH:20][C:21]([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[S:18][CH:19]=1)\[C:12](O)=[O:13])=[O:7])([CH3:4])([CH3:3])[CH3:2].P(Cl)(Cl)(Cl)(Cl)Cl.C[Si](C([Si](C)(C)C)C(N)=O)(C)C.Cl.[NH2:59][CH:60]1[C:85](=[O:86])[N:62]2[C:63]([C:69]([O:71][CH:72]([C:79]3[CH:84]=[CH:83][CH:82]=[CH:81][CH:80]=3)[C:73]3[CH:78]=[CH:77][CH:76]=[CH:75][CH:74]=3)=[O:70])=[C:64]([CH2:67][Cl:68])[CH2:65][S:66][C@H:61]12>C(Cl)Cl.C(OCC)(=O)C>[C:1]([O:5][C:6]([CH2:8][O:9]/[N:10]=[C:11](/[C:15]1[N:16]=[C:17]([NH:20][C:21]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)([C:34]2[CH:35]=[CH:36][CH:37]=[CH:38][CH:39]=2)[C:28]2[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=2)[S:18][CH:19]=1)\[C:12]([NH:59][CH:60]1[C:85](=[O:86])[N:62]2[C:63]([C:69]([O:71][CH:72]([C:73]3[CH:78]=[CH:77][CH:76]=[CH:75][CH:74]=3)[C:79]3[CH:80]=[CH:81][CH:82]=[CH:83][CH:84]=3)=[O:70])=[C:64]([CH2:67][Cl:68])[CH2:65][S:66][C@H:61]12)=[O:13])=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

7

反応物 4

HCID 24819Phosphorus pentachlorideHCID 11708267BistrimethylsilylacetamidHCID 13078701(2Z)-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethoxy]imino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetic acidHCID 13239629Benzhydryl 7-amino-3-chloromethyl-3-cephem-4-carboxylate hydrochloride

生成物 1

HCID 87882460benzhydryl (6R)-3-(chloromethyl)-7-[[(2Z)-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethoxy]imino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate収率 67%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒2 回HCID 8857Ethyl Acetate溶媒

実験手順

To an ice-cooled solution of (Z)-2-t-butoxycarbonylmethoxyimino-2-(tritylaminothiazol-4-yl)acetic acid (IVg') (2.71 g, 5 mmoles) in CH2Cl2 (20 ml) was added PCl5 (1.24 g, 6 mmoles), and the solution was stirred for 20 minutes at room temperature. The acid chloride solution was added under ice-cooling to a solution of the silylated 7-ACA ester, which was prepared by adding bis(trimethylsilyl)acetamide (BSA, 3.7 ml, 15 mmoles) to a stirred suspension of benzhydryl 7-amino-3-chloromethyl-3-cephem-4-carboxylate hydrochloride (V) (2.25 g, 5 mmoles) in CH2Cl2 (20 ml). The reaction mixture was stirred at room temperature for 30 minutes, diluted with ethyl acetate (200 ml) and washed with an aqueous NaHCO3 solution and water. After drying over Na2SO4, the solution was evaporated and the residue was purified by silica gel chromatography (Wako gel C-200, 60 g). The desired fractions, eluted by CHCl3, were combined and concentrated to give 3.16 g (67%) of the title compound VIg'.

後処理

  1. customwas prepared
  2. stirringThe reaction mixture was stirred at room temperature for 30 minutes
  3. washwashed with an aqueous NaHCO3 solution and water
  4. dry with materialAfter drying over Na2SO4
  5. customthe solution was evaporated
  6. customthe residue was purified by silica gel chromatography (Wako gel C-200, 60 g)
  7. washThe desired fractions, eluted by CHCl3
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-800dadbfc4c644ffaa50a81b9f94575e
出典データセット
uspto-grants-1985_02
特許番号
US04500526

反応ノート

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