(3S,6S)-(+)-2,5-Dimethoxy-3,6-dimethyl-3,6-dihydropyrazin 、 alkaline earth salt of/the/ methylsulfuric acid 在
正丁基锂 作用下,
生成
(3R,6S)-Hydroxymethyl-2,5-dimethoxy-3,6-dimethyl-3,6-dihydropyrazin 、 (3R,6S)-Hydroxymethyl-2,5-dimethoxy-3,6-dimethyl-3,6-dihydropyrazin