A concise synthesis of (+)-pancratistatin using pinitol as a chiral building block
摘要:
A concise approach toward (+)-Pancratistatin has been achieved via 12 steps from pinitol. An ultrasound assisted arylcerium induced ring opening of cyclic sulfate was employed as a key step. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis and Structure of 1-D-6-O-(2-Amino-2-deoxy-α- and -β-D-gluco- and -galactopyranosyl)-3-O-methyl-D-chiro-inositol
摘要:
A convenient preparative synthesis of 1-D-6-O-(2-amino-2-deoxy-alpha-D-glucopyranosyl)-3-O-methyl-chiro-inositol), 1-D-6-O-(2-amino-2-deoxy-beta-D-glucopyranosyl)-3-O-methyl- chiro-inositol (1b), I-D-6-O-(2-amino-2-deoxy-alpha-D-galactopyranosyl)-3-O-methyl-chiro-inositol (IIb), and 1-D-6-O-(2-amino-2-deoxy-beta-D-galactopyranosyl)-3-O-methyl-chiro-ino- sitol (IIb) from 3-O-methyl-D-chiro-inositol (pinitol) as starting material is reported. These compounds contain some of the basic structural motifs proposed for insulin mediators, The three-dimensional structures of these compounds have been determined by NMR spectroscopy and molecular dynamics simulations.