Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pseudoenantiomeric character of the lowest energy transition states for cyclization from the corresponding anionic hemiaminals of Phe-I for (R,S) d-ribose and (S,R) d-lyxose. Light blue arrow shows O–C distance for attack of carbonyl oxygen on nitrile carbon.
