Technology Process of (1R,2R,3S,3aR,8bS)-methyl 6-amino-1,8b-dihydroxy-8-methoxy-3a-(4-methoxyphenyl)-3-phenyl-2,3,3a,8b-tetrahydro-1H-benzo[b]-cyclopenta[d]furan-2-carboxylate
There total 14 articles about (1R,2R,3S,3aR,8bS)-methyl 6-amino-1,8b-dihydroxy-8-methoxy-3a-(4-methoxyphenyl)-3-phenyl-2,3,3a,8b-tetrahydro-1H-benzo[b]-cyclopenta[d]furan-2-carboxylate which
guide to synthetic route it.
The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:
synthetic route:
- Guidance literature:
-
(1R,2R,3S,3aR,8bS)-methyl 1,8b-dihydroxy-8-methoxy-3a-(4-methoxyphenyl)-3-phenyl-6-(trifluoromethylsulfonyloxy)-2,3,3a,8b-tetrahydro-1H-benzo[b]cyclopenta[d]furan-2-carboxylate;
With
Benzophenone imine; palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl;
In
toluene;
at 100 ℃;
for 20h;
Inert atmosphere;
With
hydroxylamine hydrochloride; sodium acetate;
In
methanol;
at 20 ℃;
for 3h;
Inert atmosphere;
DOI:10.1021/jm3011542
- Guidance literature:
-
Multi-step reaction with 2 steps
1.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 0.82 h / -10 °C / Inert atmosphere
2.1: Benzophenone imine; palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl / toluene / 20 h / 100 °C / Inert atmosphere
2.2: 3 h / 20 °C / Inert atmosphere
With
Benzophenone imine; palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; N-ethyl-N,N-diisopropylamine;
In
dichloromethane; toluene;
DOI:10.1021/jm3011542
- Guidance literature:
-
Multi-step reaction with 8 steps
1.1: lithium hexamethyldisilazane / tetrahydrofuran / 2 h / -70 - -20 °C / Inert atmosphere
2.1: sulfuric acid; acetic acid / 20 h / 20 °C / Inert atmosphere
3.1: water; sodium hydroxide / ethanol / 1 h / 80 °C / Inert atmosphere
4.1: methanol; dichloromethane; acetonitrile / 10 h / 0 - 5 °C / Inert atmosphere; UV-irradiation
4.2: 1 h / 60 °C / Inert atmosphere
4.3: 48 h / Inert atmosphere
5.1: 5%-palladium/activated carbon; hydrogen / tetrahydrofuran / 18 h / 20 °C / Inert atmosphere
6.1: ChiralPak AD-H / ethanol / Inert atmosphere; Supercritical conditions; Resolution of racemate
7.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 0.82 h / -10 °C / Inert atmosphere
8.1: Benzophenone imine; palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl / toluene / 20 h / 100 °C / Inert atmosphere
8.2: 3 h / 20 °C / Inert atmosphere
With
Benzophenone imine; sulfuric acid; 5%-palladium/activated carbon; water; hydrogen; palladium diacetate; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; acetic acid; N-ethyl-N,N-diisopropylamine; sodium hydroxide; lithium hexamethyldisilazane;
In
tetrahydrofuran; methanol; ethanol; dichloromethane; toluene; acetonitrile;
1.1: |Baker-Venkataraman Rearrangement;
DOI:10.1021/jm3011542