Methanesulfonyl chloride → (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-3-[(Z)-(3-methoxy-4-methyl-5-oxofuran-2-ylidene)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

HRID 973875노트

반응식

HRID 973875 반응식
C([NH:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:30]/[O:31]C(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)/[C:27]([O-:29])=O)[N:25]=1)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Na+].CS(Cl)(=O)=O.[NH2:57][C@@H:58]1[C:91](=[O:92])[N:60]2[C:61]([C:75]([O:77]C(C3C=CC=CC=3)C3C=CC=CC=3)=[O:76])=[C:62](/[CH:65]=[C:66]3/[C:67]([O:73][CH3:74])=[C:68]([CH3:72])[C:69](=[O:71])[O:70]/3)[CH2:63][S:64][C@H:59]12>CN(C=O)C.C(OCC)(=O)C>[NH2:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:30]/[OH:31])/[C:27]([NH:57][C@@H:58]2[C:91](=[O:92])[N:60]3[C:61]([C:75]([OH:77])=[O:76])=[C:62](/[CH:65]=[C:66]4/[C:67]([O:73][CH3:74])=[C:68]([CH3:72])[C:69](=[O:71])[O:70]/4)[CH2:63][S:64][C@H:59]23)=[O:29])[N:25]=1

참가 물질

6

반응물 3

HCID 31297Methanesulfonyl chlorideHCID 23714200sodium (2Z)-2-[2-(tritylamino)-1,3-thiazol-4-yl]-2-trityloxyiminoacetateHCID 67923960diphenylmethyl 7beta-amino-3-(Z-2,5-dihydro-4-methoxy-3-methyl-2-oxofuran-5-ylidenemethyl)ceph-3-em-4-carboxylate

생성물 1

HCID 88512320(6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-3-[(Z)-(3-methoxy-4-methyl-5-oxofuran-2-ylidene)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid수율 81%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매2회HCID 8857Ethyl Acetate용매

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온도
-15 °C

실험 절차

Sodium 2-(2-tritylaminothiazol-4-yl)-2-Z-trityloxyiminoacetate (0.759 g), in dry DMF (5 mls) was cooled to ca -50° C. under argon. This solution was treated with methanesulphonyl chloride (0.085 mls) and allowed to warm to -15° C. A solution of diphenylmethyl 7β-amino-3-(Z-2,5-dihydro-4-methoxy-3-methyl-2-oxofuran-5-ylidenemethyl)ceph-3-em-4-carboxylate, (0.46 g) in dry DMF (5 mls) was added, and the solution allowed to reach room temperature over 1 h. The solution was diluted with ethl acetate and washed with water, brine and then dried. After removal of solvent the residue was flash chromatographed on silica gel eluting with 50% ethyl acetate/hexane to give the title compound as a yellow foam, (0.375 g, 36%), νmax 3380, 1770(br), 1725, 1685, 1630, 1505(br), 1440, 1370 and 1345cm-1 ; δH (CDCl3) 2.07 (3H,s), 3.74 and 3.96 (2H,ABq, J18.3Hz, sharpens on D2O shake), 5.08 (1H, m, sharpens to d, J5.0Hz on D2O shake), 6.12 (1H, br.m, sharpens to d, J5.0Hz on D2O shake), 6.43 (1H, br.s, sharpens on D2O shake), 6.74 (1H, s), 6.78 (1H, br.s, exch.), 6.98 (1H, s) and 7.20 to 7.55 (40H, m, arom-H); [mass spectrum: +ve ion (NOBA, Na+) MNa+, 1180].

후처리

  1. washwashed with water, brine
  2. customdried
  3. customAfter removal of solvent the residue
  4. customchromatographed on silica gel eluting with 50% ethyl acetate/hexane

출처 및 근거

ORD 기록
ord-65c68cc9887248d0b737782433fbe60d
출처 데이터셋
uspto-grants-1991_11
특허 번호
US05064649

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