Reacción #816390

Ecuación de reacción

19a

methyl (3aR,5S,6R,6aS)-6-hydroxy-2,2-dimethyl-5-{[(N-{[4,7,10-tris(2-tert-butoxy-2-oxoethyl)-1,4,7,10-tetraazacyclododecane-1-yl]acetyl}glycyl)amino]methyl}dihydrofuro[2,3-d][1,3]dioxole-3a(5H)-carboxylate

LiOH.H2O

→

Product 20a

Rendimiento 81.0%

(3aR,5S,6R,6aS)-6-hydroxy-2,2-dimethyl-5-{[(N-{[4,7,10-tris(2-tert-butoxy-2-oxoethyl)-1,4,7,10-tetraazacyclododecan-1-yl]acetyl} glycyl)amino]methyl}dihydrofuro[2,3-d][1,3]dioxole-3a(5H)-carboxylic acid

Rendimiento 81.0%

Disolventes

MeOH

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroSolvents were evaporated
2. 2
   Otrothe residue was purified by silica column chromatography

Procedimiento

To a solution of 19a (1.0 g, 1.17 mmol) in MeOH (2 mL) was added a solution of LiOH.H2O (48.5 mg, 1.17 mmol, Aldrich). The resulting solution was stirred at room temperature for 4 h. Solvents were evaporated and the residue was purified by silica column chromatography. Product 20a was obtained as a white solid (0.8 g; yield 81%).

Fuente