An unusual amino acid, L-methionine sulfoximine (1), has been isolated from the fresh seeds of Cnestis palala (LOUR.) MERR. [Connaraceae]. The absolute configuration of the natural sulfoximine (1) was confirmed to be 2(S)-methionine S(S)-sulfoximine [(2S, SS)-2-amino-4-(S-methylsulfonimidoyl)-n-butanoic acid] by comparison of the [α]D value and IR spectrum with those of authentic samples obtained through the optical resolution of synthetic materials. Acute toxicity of the seeds of C. palala in a beagle dog was also studied.
从 Cnestis palala (LOUR.) MERR 的新鲜种子中分离出一种不寻常的
氨基酸,
L-蛋氨酸亚磺
酰亚胺 (1)。 [康纳莱科].
天然亚磺
酰亚胺(1)的绝对构型被证实为2(S)-甲
硫氨酸S(S)-亚磺
酰亚胺[(2S,SS)-2-
氨基-4-(S-甲磺
酰亚胺酰基)-正
丁酸]通过将 [α]D 值和红外光谱与通过合成材料的光学分辨率获得的真实样品进行比较。还研究了 C. palala 种子对比格犬的急性毒性。