R. Hodgson et al., Directed and undirected asymmetric dihydroxylation reactions: application in the synthesis of a C-linked analogue of allolactose, CHEM COMMUN, (20), 2001, pp. 2076-2077
The complex OsO4. (S,S)-1,2-diphenyl-N,N'-bis(2,4,6-trimethylbenzyl)ethane-
1,2-diamine is an effective reagent for the desymmetrisation of meso-1,2-bi
s(3,6-dihydro-2H-pyran-2-yl)ethanes by asymmetric dihydroxylation; this pro
cess, whose sense of diastereoselectivity depends on substitution and stere
ochemistry, has been exploited in the synthesis of a C-linked analogue of a
llolactose.