All four Stereoisomers of pyriculol were synthesized to assist in forming a correlation between their chemical structure and biological activity. The (R, E)-2-hydroxy-3-pentenal derivative was coupled with a lithium acetylide derivative to give a diastereomeric mixture of the acetylenic alcohol, which led to the antipode of pyriculol and its 3'-epimer. Similarly obtained were the natural pyriculol and its 3'-epimer from the (S)-isomer of this aldehyde.
所有四种堿
呋喃的立体异构体都被合成,以帮助建立它们的
化学结构与
生物活性之间的关联。将(R, E)-2-羟基-
3-戊烯醛衍
生物与
锂乙炔衍
生物偶联,生成了一种炔醇的非对映异构体混合物,从而得到了堿
呋喃的对映体及其3'-呤。类似地,天然的堿
呋喃及其3'-呤也是从该醛的(S)-异构体中获得的。