Two new sulfur-containing amides, entadamide A (1) and entadamide B (2), isolated from the seeds of Entadaphaseoloides, were synthesized by the addition reaction of methanethiol to propiolic acid (5) followed by condensation with ethanolamine by the use of dicyclohexylcarbadiimide. These compounds inhibited the 5-lipoxygenase activity of RBL-1 cells at 10(-4) g/ml. This finding suggests that entadamides
Abstract A second new sulphur-containing amide, entadamide B, has been isolated from the dry seeds of Entadaphaseoloides Merr. together with entadamide A. Entadamide B was characterized by spectroscopic methods as N -(2-hydroxyethyl)-3,3- bis (methylthi and was synthesized in two steps from propiolic acid.
摘要 从 Entada phaseoloides Merr 的干燥种子中分离出了第二种新的含硫酰胺,entadamide B。Entadamide A. Entadamide B 通过光谱方法表征为 N -(2-羟乙基)-3,3- 双(甲基硫),由丙炔酸分两步合成。