The circular dichroism spectra of folic acid and 10-thiafolic acid and the problem of racemization in the synthesis of analogs of folic acid through the cyclization of substituted 2-amino-3-cyanopyrazines.
D002942:Circular Dichroism; D003500:Cyclization; D005492:Folic Acid / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D007536:Isomerism; D009570:Nitriles; D011719:Pyrazines
D009570:Nitriles; D011719:Pyrazines; C010639:10-thiofolic acid; D005492:Folic Acid