Technology Process of (4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-aza-pentaleno[2,1-a]phenanthrene-6b-carbothioic acid S-chloromethyl ester
There total 6 articles about (4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-aza-pentaleno[2,1-a]phenanthrene-6b-carbothioic acid S-chloromethyl ester which
guide to synthetic route it.
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synthetic route:
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1323942-37-5
(4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6adimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-azapentaleno[2,1-a]phenanthrene-6b-carboxylic acid
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1323943-90-3
(4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-aza-pentaleno[2,1-a]phenanthrene-6b-carbothioic acid S-chloromethyl ester
- Guidance literature:
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(4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6adimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-azapentaleno[2,1-a]phenanthrene-6b-carboxylic acid;
With
4-methyl-morpholine; HATU;
In
N,N-dimethyl-formamide;
at 70 ℃;
for 4h;
With
sodium hydrogen sulfide;
In
N,N-dimethyl-formamide;
at 20 ℃;
for 3h;
chlorobromomethane;
In
N,N-dimethyl-formamide;
at 20 ℃;
for 48h;
Product distribution / selectivity;
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1323943-90-3
(4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-aza-pentaleno[2,1-a]phenanthrene-6b-carbothioic acid S-chloromethyl ester
- Guidance literature:
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1323943-90-3
(4aS,4bR,5S,6aS,6bS,9aR,10aS,10bS,12S)-8-benzyl-4b,12-difluoro-5-hydroxy-4a,6a-dimethyl-2-oxo-2,4b,5,6,6a,7,8,9,9a,10,10a,10b,11,12-tetradecahydro-4aH-8-aza-pentaleno[2,1-a]phenanthrene-6b-carbothioic acid S-chloromethyl ester
- Guidance literature:
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Multi-step reaction with 5 steps
1.1: potassium acetate / N,N-dimethyl-formamide / 1.5 h / 100 °C / Inert atmosphere
2.1: ethanol / Candida antarctica lipase / 37 °C / Enzymatic reaction
3.1: trifluoroacetic acid / xylene / 1 h / 140 °C
4.1: sodium hydroxide; water / tetrahydrofuran / 72 h / 20 °C
4.2: pH 6
5.1: 4-methyl-morpholine; HATU / N,N-dimethyl-formamide / 4 h / 70 °C
5.2: 3 h / 20 °C
5.3: 48 h / 20 °C
With
4-methyl-morpholine; ethanol; water; potassium acetate; HATU; trifluoroacetic acid; sodium hydroxide;
Candida antarctica lipase;
In
tetrahydrofuran; N,N-dimethyl-formamide; xylene;