尿苷(5')二氢二磷酰(1)-alpha-D-葡萄糖   、                                                                                      
R-(+)-Pentobarbital                                                                                                                                                              在
                                                                                                                                                                                 mouse liver microsomes   、                                                                                                  magnesium chloride                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.5h,
                                                                                                                生成                                                 (5R)-5-ethyl-5-[(2R)-pentan-2-yl]-1-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-1,3-diazinane-2,4,6-trione   、                                                                                             (5S)-5-ethyl-5-[(2R)-pentan-2-yl]-1-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-1,3-diazinane-2,4,6-trione