The previous X-ray-crystallographic determination of the relative configuration of P-1894B, a potent prolyl hydroxylase inhibitor isolated from the culture broth of Streptomyces albogriseolus, was extended by means of chemical and spectral studies. The absolute configuration of P-1894B (1) was established from the absolute configuration of two constituent monosaccharides, L-aculose (3) and L-rhodinose (4), produced by chemical degradation of 1. The absolute configuration of the aglycone part (aquayamycin) was also established as 2. The stereostructure of the reduction product (11) obtained by the catalytic hydrogenation of 1 was also elucidated.
之前对从白色链霉菌的培养液中分离出的强效脯
氨酸羟化酶
抑制剂P-1894B的相对构型的X射线晶体学测定,通过
化学和光谱研究得到了进一步的扩展。通过对1的
化学降解所产生的两个组成
单糖L-果糖(3)和L-红糖(4)的绝对构型,确定了P-1894B(1)的绝对构型。糖苷部分(aquayamycin)的绝对构型也被确定为2。此外,还阐明了通过对1进行催化加氢反应获得的还原产物(11)的立体结构。