Multi-step reaction with 13 steps
1: chlorotrimethylsilane / dioxane / 2.5 h / 50 °C
2: NaN3 / dimethylformamide / 0.25 h / 60 °C
3: 70 percent / pyridine / 1.5 h / 20 °C
4: CF3COOH / CH2Cl2 / 10 h
5: H2 / Pd/C / methanol / 14 h
6: Et3N / dimethylformamide / 1 h
7: 71 percent / tetrabutylammonium fluoride monohydrate / tetrahydrofuran / 1 h
8: 76 percent / isodurenedisulfonyl dichloride; 1H-tetrazole; pyridine / 1 h
9: KOH; water / pyridine / 3 h
10: isodurenedisulfonyl dichloride; pyridine; 1H-tetrazole / 0.33 h
11: AcOH; water / 5 h
12: pyridine / 20 h
13: 71 percent / iPr2EtN / CH2Cl2 / 1 h
With
pyridine; 1H-tetrazole; potassium hydroxide; chloro-trimethyl-silane; sodium azide; tetrabutyl ammonium fluoride; water; hydrogen; acetic acid; 2,4,5,6-tetramethylbenzenedisulfonyl dichloride; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; pyridine; methanol; dichloromethane; N,N-dimethyl-formamide;
1: Substitution / 2: Substitution / 3: Acylation / 4: Etherification / 5: Hydrogenation / 6: Condensation / 7: deprotection / 8: Condensation / 9: Hydrolysis / 10: Cyclization / 11: Hydrolysis / 12: Etherification / 13: phosphorylation;
DOI:10.1002/(SICI)1522-2675(20000119)83:1<162::AID-HLCA162>3.0.CO;2-Y