2(1H)-Pyrazinone ring-containing natural products, flavocol, deoxymuta-aspergillic acid and finally optically active deoxyaspergillic acid, were easily synthesized by a newly developed procedure for preparation of 2(1H)-pyrazinone derivatives from dipeptidyl aldehyde hydrochlorides. The absolute configuration of natural deoxyaspergillic acid was synthetically determined as S.
                                    含有2(1H)-
吡嗪酮环的
天然产物,包括黄曲霉素、脱氧变曲霉酸以及最后得到的光学活性脱氧曲霉酸,均通过一种新开发的从二肽基醛盐酸盐制备2(1H)-
吡嗪酮衍
生物的方法轻松合成。天然脱氧曲霉酸的绝对构型被合成确认为S型。