ester of velutinal (i.e. compound 2b and 2a, respectively) as the only sesquiterpenoid. When the fruit bodies are injured the esters are enzymatically converted into sesquiterpene furans, mono- and di-aldehydes, and lactones, which have been isolated and their structures elucidated. These compounds have been submitted to conformational analysis by molecular mechanics and 1H NMR in order to make correct
研究了乳杆菌和苦瓜黄变和刺激性味道背后的
化学背景。完整的子实体原本含有velutinal的(
脂肪酸酯即化合物2B和图2a分别)作为唯一的
倍半萜。当子实体受伤时,酯被酶转化为
倍半萜烯
呋喃,单醛和二醛以及内酯,这些酯已被分离并阐明了其结构。这些化合物已通过分子力学进行了构象分析,并且1为了进行正确的立体
化学分配,使用1 H NMR。这两个物种的子实体的辛辣味道是由于新的二醛,
金水晶(9)引起的,而新的
三烯-内酯(8)与颜色的变化有关。