1,2-Dichloroethane → (S)-2-{[(3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-(piperidine-2-carbonyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl]-amino}-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid bis hydrochloride

HRID 391955Notes

Reaction equation

HRID 391955 reaction equation
Cl.Cl.C[O:4][C:5](=[O:55])[C@@H:6]([NH:22][C:23]([C@@H:25]1[CH2:34][C:33]2[CH:32]=[C:31]3[O:35][CH2:36][C@H:37]([C:39]4[CH:44]=[CH:43][C:42]([O:45][CH2:46][C:47]5[CH:52]=[CH:51][C:50]([Cl:53])=[C:49]([Cl:54])[CH:48]=5)=[CH:41][CH:40]=4)[O:38][C:30]3=[CH:29][C:28]=2[CH2:27][NH:26]1)=[O:24])[CH2:7][C:8]1[CH:13]=[CH:12][C:11]([C:14]2[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[C:15]=2[CH3:21])=[CH:10][CH:9]=1.CCN(C(C)C)C(C)C.C(Cl)C[Cl:67].C(OC([N:76]1[CH2:81][CH2:80][CH2:79][CH2:78][CH:77]1[C:82](O)=[O:83])=O)(C)(C)C>C(Cl)Cl>[ClH:53].[ClH:67].[Cl:54][C:49]1[CH:48]=[C:47]([CH:52]=[CH:51][C:50]=1[Cl:53])[CH2:46][O:45][C:42]1[CH:43]=[CH:44][C:39]([C@H:37]2[CH2:36][O:35][C:31]3=[CH:32][C:33]4[CH2:34][C@@H:25]([C:23]([NH:22][C@@H:6]([CH2:7][C:8]5[CH:13]=[CH:12][C:11]([C:14]6[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[C:15]=6[CH3:21])=[CH:10][CH:9]=5)[C:5]([OH:4])=[O:55])=[O:24])[N:26]([C:82]([CH:77]5[CH2:78][CH2:79][CH2:80][CH2:81][NH:76]5)=[O:83])[CH2:27][C:28]=4[CH:29]=[C:30]3[O:38]2)=[CH:40][CH:41]=1

Participants

6

Reactant 4

HCID 111,2-DichloroethaneHCID 81531DiisopropylethylamineHCID 5818311-[(Tert-butoxy)carbonyl]piperidine-2-carboxylic acidHCID 66719317(S)-2-({(3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid methyl ester dihydrochloride

Product 1

HCID 86654944(S)-2-{[(3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-(piperidine-2-carbonyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl]-amino}-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid bis hydrochlorideYield 71.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

(S)-2-({(3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid methyl ester bis hydrochloride (25 mg) was suspended in DCM, 0.1 mL DIEA added and mixture concentrated to provide a solid. In a separate vial, EDC (35 mg) and piperidine-1,2-dicarboxylic acid mono-tert-butyl ester (83 mg) were dissolved in DCM and stirred 15 min. This solution was added to the solid and mixture stirred for 4 hours. The reaction mixture was directly purified over silica (hexanes to 1:1 hexanes EtOAc to 1:1 hexanes EtOAc+2% MeOH). The resulting compound was hydrolyzed (2 mg removed before deprotection) and deprotected according to General Procedures B and C to provide the title compound (10 mg). LCMS (m/z): 850.

Workup

  1. concentrationmixture concentrated
  2. customto provide a solid
  3. additionThis solution was added to the solid and mixture
  4. stirringstirred for 4 hours
  5. customThe reaction mixture was directly purified over silica (hexanes to 1:1 hexanes EtOAc to 1:1 hexanes EtOAc+2% MeOH)
  6. custom(2 mg removed before deprotection)

Sources & evidence

ORD record
ord-add098e2b2e24e1fa08cdf78110ef007
Source dataset
uspto-grants-2013_02
Patent number
US08383644B2

Reaction notes

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