1,2-Dichloroethane → (S)-2-{[(3R,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-(2,5-dimethyl-oxazole-4-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

HRID 708783Notes

Reaction equation

HRID 708783 reaction equation
C[O:2][C:3](=[O:53])[C@@H:4]([NH:20][C:21]([C@@H:23]1[CH2:32][C:31]2[CH:30]=[C:29]3[O:33][CH2:34][C@@H:35]([C:37]4[CH:42]=[CH:41][C:40]([O:43][CH2:44][C:45]5[CH:50]=[CH:49][C:48]([Cl:51])=[C:47]([Cl:52])[CH:46]=5)=[CH:39][CH:38]=4)[O:36][C:28]3=[CH:27][C:26]=2[CH2:25][NH:24]1)=[O:22])[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[CH:17]=[CH:16][N:15]=[C:14]([CH3:18])[C:13]=2[CH3:19])=[CH:8][CH:7]=1.C(Cl)CCl.[CH3:58][C:59]1[O:60][C:61]([CH3:67])=[C:62]([C:64](O)=[O:65])[N:63]=1>C(Cl)Cl>[Cl:52][C:47]1[CH:46]=[C:45]([CH:50]=[CH:49][C:48]=1[Cl:51])[CH2:44][O:43][C:40]1[CH:41]=[CH:42][C:37]([C@@H:35]2[CH2:34][O:33][C:29]3=[CH:30][C:31]4[CH2:32][C@@H:23]([C:21]([NH:20][C@@H:4]([CH2:5][C:6]5[CH:7]=[CH:8][C:9]([C:12]6[CH:17]=[CH:16][N:15]=[C:14]([CH3:18])[C:13]=6[CH3:19])=[CH:10][CH:11]=5)[C:3]([OH:2])=[O:53])=[O:22])[N:24]([C:64]([C:62]5[N:63]=[C:59]([CH3:58])[O:60][C:61]=5[CH3:67])=[O:65])[CH2:25][C:26]=4[CH:27]=[C:28]3[O:36]2)=[CH:38][CH:39]=1

Participants

5

Reactant 3

HCID 111,2-DichloroethaneHCID 27954652,5-Dimethyl-1,3-oxazole-4-carboxylic acidHCID 58327532(S)-2-({(3R,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

Product 1

HCID 58327429(S)-2-{[(3R,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-(2,5-dimethyl-oxazole-4-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

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

(S)-2-({(3R,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 (35 mg) was dissolved in 2 mL DCM. In a separate vial EDC (5 equiv) and 2,5-dimethyl-oxazole-4-carboxylic acid (10 equiv) were dissolved in DCM and stirred 40 min. This solution was added to the above mixture stirred 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 according to General Procedures B to give the title compound (10 mg). LCMS (m/z): 862.

Workup

  1. additionThis solution was added to the above mixture
  2. stirringstirred 4 hours
  3. customThe reaction mixture was directly purified over silica (hexanes to 1:1 hexanes EtOAc to 1:1 hexanes EtOAc+2% MeOH)

Sources & evidence

ORD record
ord-1fdc175e994945a5a164d60a1db0853c
Source dataset
uspto-grants-2015_11
Patent number
US09175003B2

Reaction notes

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