Multi-step reaction with 24 steps
1: 1.) Sn(OTf)2, N-ethylpiperidine / 1.) THF, -78 deg C
2: DMAP / CH2Cl2
3: HCO2H, H2O2 / H2O
4: LiOOH / -5 °C
5: EDCI*HCl, HOBt / CH2Cl2; dimethylformamide / 0 °C
6: Li2CO3 / methanol / Ambient temperature
7: TFA, Me2S / CH2Cl2 / 0 °C
8: EDCI*HCl, HOBt / tetrahydrofuran / 0 °C
9: TFA, Me2S / CH2Cl2 / 0 °C
10: 2,6-lutidine / CH2Cl2 / Ambient temperature
11: 65 percent / VOF3, BF3*Et2O, AgBF4 / trifluoroacetic acid; CH2Cl2 / 0 °C
12: NaHCO3, H2O / methanol / 144 h / Ambient temperature
13: HATU, HOAt, collidine / CH2Cl2; dimethylformamide / 16 h / -20 °C
14: 85 percent / HF*pyridine / tetrahydrofuran / 1 h / Ambient temperature
15: Na2CO3 / dimethylsulfoxide / 1.5 h / Ambient temperature
16: 1 h
17: Zn, HOAc / ethanol / 40 °C
18: NaNO2, H3PO2, H2O / Cu2O / tetrahydrofuran / 1 h / 0 °C
19: 87 percent / Et
3N, HCO
2H /
2>*CH2Cl2 / dimethylformamide / 75 °C
20: Et3N / tetrahydrofuran / Ambient temperature
21: TFA, Me2S / CH2Cl2 / 0 °C
22: 2,6-lutidine / CH2Cl2 / 0 - 20 °C
23: 1.) AlBr3, EtSH / 1.) CH2Cl2, 0 deg C, 2.) MeOH, 55 deg C, 24 h
24: Cs2CO3, Bu4NI / dimethylformamide / 0 °C
With
1-ethyl-piperidine; 2,6-dimethylpyridine; 2,3,5-trimethyl-pyridine; dmap; silver tetrafluoroborate; tin(II) trifluoromethanesulfonate; formic acid; 1-hydroxy-7-aza-benzotriazole; aluminum tri-bromide; vanadium(V) oxytrifluoride; lithium hydroperoxide; dimethylsulfide; boron trifluoride diethyl etherate; water; dihydrogen peroxide; hypophosphorous acid; tetra-(n-butyl)ammonium iodide; lithium carbonate; sodium hydrogencarbonate; sodium carbonate; benzotriazol-1-ol; caesium carbonate; pyridine hydrogenfluoride; acetic acid; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; trifluoroacetic acid; ethanethiol; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; zinc; sodium nitrite;
copper(I) oxide; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2;
In
tetrahydrofuran; methanol; ethanol; dichloromethane; water; dimethyl sulfoxide; N,N-dimethyl-formamide; trifluoroacetic acid;
DOI:10.1002/(SICI)1521-3773(19981016)37:19<2700::AID-ANIE2700>3.0.CO;2-P