Conformationally biased selective alkylation of trans-cyclohexane-1,2- bis(sulfonamide) assisted by solvent-tuned protecting groups: Applications to the synthesis of a large optically active polyazamacrocycle
The selective alkylation of (R,R)-cyclohexane-1,2-bis(sulfonamide) with trityl bromoalkyl ethers has been studied in detail. The major formation of either mono- or dialkylated compounds clearly depends on the right combination of protecting groups and the
Pena, Carmen,Alfonso, Ignacio,Gotor, Vicente
p. 3887 - 3897
(2007/10/03)
Chemoenzymatic syntheses of two optically active hexa-azamacrocycles
Two optically active hexa-azamacrocycles with C2 and D2 symmetry, respectively, have been efficiently synthesized from the enzymatically prepared (R,R)-cyclohexane-1,2-diamine bis(amidoester) derivative (R,R)-4.