Technology Process of (1R)-1-((1S)-2-{[(1S)-1-carboxy-2-methylpropyl]amino}-1-methyl-2-oxoethyl)octyl 2,4,5-trideoxy-4-(methylamino)-5-phenyl-L-erythro-pentonate
There total 11 articles about (1R)-1-((1S)-2-{[(1S)-1-carboxy-2-methylpropyl]amino}-1-methyl-2-oxoethyl)octyl 2,4,5-trideoxy-4-(methylamino)-5-phenyl-L-erythro-pentonate which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
Multi-step reaction with 9 steps
1: 90 percent / Et3N; n-Bu2BOTf / CH2Cl2 / 3 h / -78 - 20 °C
2: 88 percent / pyridinium-p-toluenesulfonate / CH2Cl2 / 20 °C
3: 84 percent / aq. H2O2; aq. LiOH / tetrahydrofuran / 3.5 h / 0 - 20 °C
4: 70 percent / diisopropylethylamine; [benzotriazol-1-yloxy-tris(dimethylamino)phosphonium]PF6 / acetonitrile / 2 h / 20 °C
5: 90 percent / p-TsOH / methanol / 2 h / 20 °C
6: 0.48 g / 4-dimethylaminopyridine / benzene / 2 h / 20 °C
7: 78 percent / Me3SiBr / CH2Cl2 / 4 h / -30 - 0 °C
8: H2 / Pd(OH)2 / methanol / 20 °C
9: 94 percent / CF3COOH / CH2Cl2 / 2 h / 20 °C
With
dmap; lithium hydroxide; trimethylsilyl bromide; di-n-butylboryl trifluoromethanesulfonate; hydrogen; dihydrogen peroxide; pyridinium p-toluenesulfonate; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; toluene-4-sulfonic acid; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid;
palladium dihydroxide;
In
tetrahydrofuran; methanol; dichloromethane; acetonitrile; benzene;
1: Condensation / 2: Addition / 3: amide cleavage / 4: Condensation / 5: ketal cleavage / 6: Esterification / 7: ketal cleavage / 8: Hydrogenolysis / 9: carbamate cleavage;
DOI:10.1016/S0040-4020(00)00772-9
- Guidance literature:
-
Multi-step reaction with 6 steps
1: 70 percent / diisopropylethylamine; [benzotriazol-1-yloxy-tris(dimethylamino)phosphonium]PF6 / acetonitrile / 2 h / 20 °C
2: 90 percent / p-TsOH / methanol / 2 h / 20 °C
3: 0.48 g / 4-dimethylaminopyridine / benzene / 2 h / 20 °C
4: 78 percent / Me3SiBr / CH2Cl2 / 4 h / -30 - 0 °C
5: H2 / Pd(OH)2 / methanol / 20 °C
6: 94 percent / CF3COOH / CH2Cl2 / 2 h / 20 °C
With
dmap; trimethylsilyl bromide; hydrogen; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; toluene-4-sulfonic acid; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid;
palladium dihydroxide;
In
methanol; dichloromethane; acetonitrile; benzene;
1: Condensation / 2: ketal cleavage / 3: Esterification / 4: ketal cleavage / 5: Hydrogenolysis / 6: carbamate cleavage;
DOI:10.1016/S0040-4020(00)00772-9