tert-butyl (5R)-5-methyl-2,2-dioxooxathiazolidine-3-carboxylate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was synthesized in analogy to example 8, intermediate a), from ethyl 5-benzyloxyindole-2-carboxylate (commercially available), (R)-5-methyl-2,2-dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester (prepared according to WO02/010169) and potassium tert-butoxide, to give the desired compound as a yellow solid (100%).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was synthesized in analogy to example 8, intermediate a), from ethyl 5-benzyloxyindole-2-carboxylate (commercially available), (R)-5-methyl-2,2-dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester (prepared according to WO02/010169) and potassium tert-butoxide, to give the desired compound as a yellow solid (100%).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was synthesized in analogy to example 8, intermediate a), from ethyl 5-benzyloxyindole-2-carboxylate (commercially available), (R)-5-methyl-2,2-dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester (prepared according to WO02/010169) and potassium tert-butoxide, to give the desired compound as a yellow solid (100%).