clearly. Compound 2 possesses an asymmetric carbon center at C-2. The absolute configuration of this position was assigned as S from the similar positive Cotton effect data observed for 1 in the CD spectrum at 301 nm
clearly. Compound 2 possesses an asymmetric carboncenter at C-2. The absolute configuration of this position wasassigned as S from the similar positive Cotton effect dataobserved for 1 in the CD spectrum at 301 nm