Cyclopropanecarbonyl chloride → HCID 90281581, compound

Participants

Reaction Steps

A solution of [2-Hydroxy-1-(3-hydroxy-octyl)-2,3,3a,4,9,9a-hexahydro-1H-cyclopenta[b]naphthalen-5-yloxy]-acetic acid methyl ester (32 mg, 0.06 mmol), DIPEA (31 μl, 0.18 mmol) and DMAP (1 crystal) in DCM (2 ml) was treated with cyclopropanecarbonyl chloride (8 μl, 0.08 mmol) and stirred for 24 hr at RT under nitrogen. The reaction mixture was diluted with MTBE and washed with saturated sodium bicarbonate solution and brine, dried over sodium sulfate and concentrated under vacuum. The residue was purified by silica gel chromatography. This resulting material was dissolved in MeOH/THE (4 ml), treated with Amberlite IR120H and stirred 24 hr. The reaction mixture was filtered and concentrated to yield cyclopropanecarboxylic acid 1-(3-hydroxy-octyl)-5-methoxycarbonylmethoxy-2,3,3a,4,9,9a-hexahydro-1H-cyclopenta[b]naphthalen-2-yl ester (32 mg) as an oil. 1HNMR: (400 MHz, DMSO-d6) δ 7.06 (d, 1H, J=7.6); 6.80 (d, 1H, J=7.2); 6.63 (d, 1H, J=8.8); 4.78 (s, 2H); 4.1-4.2 (m, 1H); 4.05-4.50 (m, 1H); 3.68 (s, 3H); 2.6-2.8 (m, 2H); 2.4-2.5 (m, 2H); 2.20-2.35 (m, 1H); 2.10-2.20 (m, 1H); 1.8-1.95 (m, 1H); 1.10-1.16 (m, 15H); 0.95-1.10 (m, 1H); 0.70-0.90 (m, 7H); MS: m/z 495 [M+Na]+

Provenance & Evidence