2004
Carbohydrates
U 0500
Microwave-Assisted, Tin-Mediated, Regioselective 3-O-Alkylation of Galacto— Treatment of unprotected galactose derivatives such as (I) with dibutyltin
50- 164 sides.
oxide under microwave conditions produces a stannylene acetal which reacts with
activated alkyl bromides to gives 3-O-alkylated products selectively. — (BALLELL,
L.; JOOSTEN, J. A. F.; EL MAATE, F. A.; LISKAMP, R. M. J.; PIETERS*, R. J.;
Tetrahedron Lett. 45 (2004) 35, 6685-6687; Dep. Med. Chem., Utrecht Inst. Pharm.
Sci., Fac. Pharm., Utrecht Univ., Utrecht, NL-3508 TB Utrecht, Neth.; Eng.) — Mais