Tetrahedron Letters p. 5801 - 5804 (1997)
Update date:2022-08-04
Topics:
Dugat, Denise
Chiaroni, Angele
Riche, Claude
Royer, Jacques
Husson, Henri-Philippe
Macrocyclic dioxadilactam 2 was obtained in two steps from R-(-)-phenylglycinol via the chiral amido-ketal 1. Cyclization of 1 in acidic conditions (PTSA) and concentrated solution (9 = 0.15 M) afforded 2 as three diasteromers 2a+2b+2c, two of which show a C-2 symmetry.
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(1989)
