N-(tert-Butoxycarbonyl)-(S)-(+)-3-pyrrolidinol

• tert-Butyl 3-(2-bromophenoxy)pyrrolidine-1-carboxylate, which is employed as a key intermediate in the preparation of IkB-kinase IKK2 inhibitor.
• Dimethoxy-pyrrolidylquinazoline , and peptidomimetic quinoline derivatives.

24424-99-5

40499-83-0

83220-73-9

The general procedure for the synthesis of 1-tert-butoxycarbonyl-3-hydroxy-pyrrolidine from di-tert-butyl dicarbonate and 3-hydroxy-pyrrolidine was as follows: first, (R)-3-pyrrolidinol (539 mg, 6.19 mmol) was converted into compound 16b to afford a colorless oily substance (1.3 g, 100% yield). The spectral data of this product were consistent with the expected structure and in accordance with literature reports (see Kucznierz, R. et al. J. Med. Chem. 1998, 41, 4983-4994). Subsequently, compound 16b was converted by reaction to compound 16c, again as a colorless oil. Next, compound 16e was prepared from compound 16c by a two-step reaction, still as a colorless oily substance. Finally, compound 16e was further reacted to obtain the target product compound 16, which was rendered as a yellow oily substance.