[CH2:1]([N:8]1[CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([C:17]3(O)[CH2:21][CH2:20][O:19][CH:18]3[CH3:22])[CH:14]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.CS(Cl)(=O)=O.C1CCN2C(=NCCC2)CC1>ClCCl>[CH2:1]([N:8]1[CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([C:17]3[CH:18]([CH3:22])[O:19][CH2:20][CH:21]=3)[CH:14]=2)[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
To a solution of 0.65 mmol 3-(2-benzyl-2,3-dihydro-1H-isoindol-5-yl)-2-methyl-tetrahydro-furan-3-ol (Example A64(a)) and 1.81 mmol triethylamine in 2 ml dichloromethane at 0° C. was added dropwise a solution of 0.84 methanesulfonyl chloride in 0.3 ml dichloromethane. The mixture was stirred at room temperature for 2 h and then re-cooled to 0° C. 1.94 mmol DBU was added and the mixture stirred at room temperature overnight. The reaction mixture was then concentrated in vacuo and the residue was purified by chromatography (SiO2, heptane/ethyl acetate) to yield the title compound as a colourless oil (33% yield). MS (m/e): 292.1 ([M+H]+, 100%).
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