In order to develop potential anti-fungal agents, seven glycoconjugates composed of a-L-rhamnose, 6-deoxy-a-L-talose, b-D-galactose, a-D-mannose, b-D-xylose-(1®4)-6-deoxy-a-L-talose, b-D-galactose-(1®4)-a-L-rhamnose, b-D-galactose-(1®3)-b-D-xylose-(1®4)-6-deoxy-a-L-talose as the glycone and oleanolic acid as the aglycone were synthesized in an efficient and practical way using glycosyl trichloroacetimidates as donors. The structures of the new compounds were confirmed by MS, 1H-NMR and 13C- NMR. Preliminary studies based on means of mycelium growth rate, indicated that all the compounds possess certain fungicidal activity against Sclerotinia sclerotiorum (Lib.) de Bary, Rhizoctonia solani Kuhn, Botrytis cinerea Pers and Phytophthora parasitica Dast.
                                    为了开发潜在的抗真菌药剂,七种糖苷结合物由 a-L 
鼠李糖、6-脱氧-a-L-塔尔糖、b-
D-半乳糖、a-
D-甘露糖、b-
D-木糖-(1®4)-6-脱氧-a-L-塔尔糖、b-
D-半乳糖-(1®4)-a-
L-鼠李糖组成、以三
氯乙酰亚
氨酸糖基化合物为供体,高效、实用地合成了以 b-
D-半乳糖-(1®3)-b-
D-木糖-(1®4)-6-脱氧-a-L-塔罗糖为糖酮、
齐墩果酸为苷元的新化合物。新化合物的结构已通过 MS、1H-NMR 和 13C NMR 得到证实。基于菌丝生长速率的初步研究表明,所有化合物都对 Sclerotinia sclerotiorum (Lib.) de Bary、Rhizoctonia solani Kuhn、Botrytis cinerea Pers 和 Phytophthora parasitica Dast 具有一定的杀菌活性。