New analogues of castasterone, (20R)-2α,3α-dihydroxy-7a-homo-5α-cholestan-7-one (12) and (20R)-3α,4α-dihydroxy-7a-homo-5α-cholestan-7-one (14), and brassinolide, (20R)-2α,3α-dihydroxy-7a,7b-dihomo-7a-oxa-5α-cholestan-7-one (15), (20R)-3α,4α-dihydroxy-7a,7b-dihomo-7a-oxa-5α-cholestan-7-one (16) and (20R)-7-oxa-7a-homo-5α-cholestan-2α,3α-diol (24), were synthesized and their biological and spectral properties studied.
合成了新的类似于
茄甾酮的化合物,分别为(20R)-
2α,3α-二羟基-7a-同系-
5α-胆甾烷-7-酮(12)和(20R)-3α,4α-二羟基-7a-同系-
5α-胆甾烷-7-酮(14),以及油菜素(20R)-
2α,3α-二羟基-7a,7b-二同系-7a-氧杂-
5α-胆甾烷-7-酮(15)、(20R)-3α,4α-二羟基-7a,7b-二同系-7a-氧杂-
5α-胆甾烷-7-酮(16)和(20R)-7-氧杂-7a-同系-
5α-胆甾烷-
2α,3α-二醇(24),并研究了它们的
生物和光谱性质。