2-(4-Fluorophenyl)-3-butyn-2-ol → ((R)-7-{5-[1-(4-fluorophenyl)-1-hydroxyethyl]-[1,2,3]triazol-1-yl}-6,7,8,9-tetrahydropyrido[1,2-a]indol-10-yl)-acetic acid
Reaction equation
[N:1]([CH:4]1[CH2:24][N:8]2[C:9]3[C:14]([C:15]([CH2:16][C:17]([O:19]CCC)=[O:18])=[C:7]2[CH2:6][CH2:5]1)=[CH:13][CH:12]=[CH:11][C:10]=3F)=[N+:2]=[N-:3].[F:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]([OH:36])([C:34]#[CH:35])[CH3:33])=[CH:28][CH:27]=1>>[F:25][C:26]1[CH:27]=[CH:28][C:29]([C:32]([C:34]2[N:1]([C@H:4]3[CH2:24][N:8]4[C:9]5[C:14]([C:15]([CH2:16][C:17]([OH:19])=[O:18])=[C:7]4[CH2:6][CH2:5]3)=[CH:13][CH:12]=[CH:11][CH:10]=5)[N:2]=[N:3][CH:35]=2)([OH:36])[CH3:33])=[CH:30][CH:31]=1Participants
Procedure
The title compound was prepared using procedures described in EXAMPLE 8 from propyl (7-azido-4-fluoro-6,7,8,9-tetrahydropyrido[1,2-α]indol-10-yl)acetate and 2-(4-fluorophenyl)but-3-yn-2-ol. Separation of the resulting diastereoisomers was performed at the ester stage by flash chromatography using a gradient of 10-100% EA/Hex afforded 2 esters. The faster eluting enantiomeric mixture was resolved on chiral HPLC using a 4.6×250 mm Chiralcel OD column eluting with 20% iPrOH, 20% EtOH, 59.75% Hexanes and 0.25% Et3N at 1 mL/min and 254 nm. Retention times=6.9 and 8.4 min. The 2 resulting esters were hydrolyzed separately to afford EXAMPLE 31.1 and 31.2 respectively. The slower eluting enantiomeric mixture was resolved on chiral HPLC using a 4.6×250 mm Chiralcel OD eluting with 20% iPrOH, 20% EtOH, 60% Hexanes at 1 mL/min and 254 nm. Retention times=8.7 and 11.6 min. The 2 resulting esters were hydrolyzed separately to afford EXAMPLE 31.3 and 31.4 respectively. MS (+ESI) m/z: 453.1.
Workup
- customSeparation of the resulting diastereoisomers
Sources & evidence
- ORD record
- ord-cd67ed5384af4aa99758144015b47b10
- Source dataset
- uspto-grants-2015_05
- Patent number
- US09023864B2
Reaction notes
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