(S)-2-(iodomethyl)-1,4-dioxane → (8R)-1'-[(2R)-1,4-dioxan-2-ylmethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one

HRID 1407752Notes

Reaction equation

HRID 1407752 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C@:3]2([C:21]3[C:12](=[CH:13][C:14]4[O:19][CH2:18][CH2:17][O:16][C:15]=4[CH:20]=3)[O:11][CH2:10]2)[C:2]1=[O:22].N1C2C(=CC=CC=2)C2(C3=CC4OCOC=4C=C3OC2)C1=O.I[CH2:45][C@@H:46]1[CH2:51][O:50][CH2:49][CH2:48][O:47]1.CC1C=CC(S(OC[C@H]2COCCO2)(=O)=O)=CC=1>>[O:47]1[CH2:48][CH2:49][O:50][CH2:51][C@H:46]1[CH2:45][N:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C@:3]2([C:21]3[C:12](=[CH:13][C:14]4[O:19][CH2:18][CH2:17][O:16][C:15]=4[CH:20]=3)[O:11][CH2:10]2)[C:2]1=[O:22]

Participants

5

Reactant 4

HCID 26338661(S)-2-(iodomethyl)-1,4-dioxaneHCID 53375495spiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-oneHCID 59253203(R)-(1,4-dioxan-2-yl)methyl 4-methylbenzenesulfonateHCID 59352205Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'R)-

Product 1

HCID 59352641(8R)-1'-[(2R)-1,4-dioxan-2-ylmethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-2'(1'H)-one

Procedure

Following the procedure as described in EXAMPLE 8 and making non-critical variations using (R)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one to replace spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one, and (S)-2-(iodomethyl)-1,4-dioxane (Kim, H. Y. et al., Bioorg. Med. Chem. Lett. (2005), 15:3207-11) to replace (R)-(1,4-dioxan-2-yl)methyl 4-methylbenzenesulfonate, (8R)-1′-[(2R)-1,4-dioxan-2-ylmethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one was obtained (51%) as a colorless solid: mp 198-199° C. (diethyl ether/hexanes); 1H NMR (300 MHz, CDCl3) δ7.30 (ddd, J=7.8, 7.8, 1.1 Hz, 1H), 7.16 (d, J=7.8 Hz, 1H), 7.08-7.02 (m, 2H), 6.49 (s, 1H), 6.24 (s, 1H), 4.88 (d, J=9.0 Hz, 1H), 4.64 (d, J=9.0 Hz, 1H), 4.22-4.16 (m, 2H), 4.13-4.08 (m, 2H), 3.98-3.78 (m, 4H), 3.75-3.56 (m, 4H), 3.47-3.38 (m, 1H); 13C NMR (75 MHz, CDCl3) δ177.9, 155.3, 144.7, 142.7, 138.4, 132.4, 128.9, 123.8, 123.5, 121.3, 111.7, 109.6, 99.5, 80.1, 73.3, 69.2, 66.7, 66.5, 64.6, 64.0, 58.1, 41.8; MS (ES+) m/z 396.0 (M+1).

Sources & evidence

ORD record
ord-cd867224fbf748c5a1fbbb0b31d2c46e
Source dataset
uspto-grants-2014_12
Patent number
US08916580B2

Reaction notes

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