Tetrabutylammonium Fluoride → HCID 67301477, compound

Participants

Reaction Steps

1α,3β-Bis(tert-butyldimethylsilyloxy)-20(R)-(N,N-dimethylaminocarbonylethoxy)pregna-5,7,16-triene (100 mg, 0.15 mmol) was treated with a 1M tetrahydrofuran solution of tetra-n-butylammonium fluoride (1.5 ml) in tetrahydrofuran (6.0 ml) in the same manner as shown in Example 4(2) (at room temperature for 30 minutes and then at 50° C. for 1.5 hours), followed by work up and purification using preparative thin layer chromatography (0.5 mm×2 plates, chloroform:methanol=10:1) to give the titled compound (52 mg, 83.0%) as a colorless foam.

Provenance & Evidence