(R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate → HCID 46195568, compound
Reaction equation
[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]3[O:22][CH2:21][C:11]4([C:19]5[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=5)[NH:13][C:12]4=[O:20])[C:9]3=[CH:10][C:5]=2[O:4][C:3]1=[O:23].N1C2C(=CC=CC=2)[C:26]2([C:36]3=CC4OCOC=4[CH:43]=[C:35]3[O:34][CH2:33]2)C1=O.CC1C=CC(S(OC[C@H]2CCCO2)(=O)=O)=CC=1>>[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]3[O:22][CH2:21][C:11]4([C:19]5[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=5)[N:13]([CH2:43][C@H:35]5[CH2:36][CH2:26][CH2:33][O:34]5)[C:12]4=[O:20])[C:9]3=[CH:10][C:5]=2[O:4][C:3]1=[O:23]Participants
Procedure
Following the procedure as described in EXAMPLE 8 and making non-critical variations using 3-methylspiro[furo[2,3-f][1,3]benzoxazole-7,3′-indole]-2,2′(1′H,3H)-dione to replace spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one, and (R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate to replace (R)-(1,4-dioxan-2-yl)methyl 4-methyl benzenesulfonate, 3-methyl-1′-(((R)-tetrahydrofuran-2-yl)methyl)-2H-spiro[benzofuro[6,5-d]oxazole-7,3′-indoline]-2,2′(3H,6H)-dione was obtained (69%) as a colorless solid: mp 186-187° C. (diethyl ether); 1H NMR (300 MHz, DMSO-d6) δ7.36-7.29 (m, 1H), 7.23 (d, J=8.2 Hz, 1H), 7.14 (d, J=8.2 Hz, 1H), 7.06-7.02 (m, 2H), 6.63 (d, J=6.9 Hz, 1H), 4.85-4.73 (m, 2H), 4.24-4.16 (m, 1H), 3.81-3.59 (m, 4H), 3.31 (s, 3H), 2.00-1.75 (m, 3H), 1.69-1.55 (m, 1H); 13C NMR (75 MHz, DMSO-d6) δ177.2, 157.3, 154.9, 143.4, 136.6, 133.3, 131.9, 129.3, 123.9, 123.3, 122.3, 110.2, 105.0, 92.9, 80.0, 76.1, 67.7, 57.7, 44.3, 29.1, 28.6, 25.5; MS (ES+) m/z 392.7 (M+1).
Sources & evidence
- ORD record
- ord-99ec9ad290a84f749010e6df1839057e
- Source dataset
- uspto-grants-2012_09
- Patent number
- US08263606B2
Reaction notes
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