readily available keto esters 2 as starting material. By choice of the appropriate reaction sequence both antipodes of keto ester 2a can be employed to provide any enantiomer of the desired raunescinone analogue 1a. Hypotensive, antihypertensive, and central depressant effects of 1a are described. The principle effect observed for 1a was a potent hypotensive and antihypertensive effect of long duration without
药理活性的(亚甲基二氧基)-和二乙氧基环氧
丙烷酮酯I是使用容易获得的
酮酯2作为起始原料合成的。通过选择合适的反应顺序,可以使用
酮酯2a的两种对映体来提供所需的雷诺西
酮类似物1a的任何对映体。描述了1a的降压,抗高血压和中枢抑制作用。对于1a观察到的主要作用是长期有效的降压和降压作用,而不会降低中枢神经系统。