olean-12-en-1-one. Several methods have been developed to change the 1-oxo into a 3-oxo-function and vice versa. Since olean-12-en-3-one has already been reduced to β-amyrin and olean-13(18)-ene has been synthesised, our work constitutes a synthesis of β-amyrin.
与酸13-(18)-
烯(δ-am
烯)处于酸催化平衡的18α-
烯烃12-
烯已经分几步转化为
烯烃12-
烯(β-am
烯)。将该烃转化成其11α-羟基衍
生物,然后将后者的
亚硝酸盐光解,得到11α-羟基-1-
肟基-油
烯-12-
烯。该
肟已被
水解并进一步加工以提供olean-12-en-1-one。已经开发出几种方法来将1-
氧代变成3-
氧代功能,反之亦然。由于olean-12-en-3-one已被还原为β-amyrin,并且olean-13(18)-ene已合成,因此我们的工作构成了β-amyrin的合成。