6-叠氮-6-脱氧-1,2;3,4-二-氧-异丙叉基-α-D-半乳糖的构象分析

CONFORM ATIONAL ANALYSIS OF 6-AZIDE-6-DEOXY-1,2; 3,4-DI-O-ISOPROPYLIDENE-a-D-GALACTOPYRANOSE

在合成卡那霉素类似物的核心结构时,发现6-叠氮6-脱氧-1,2;3,4-二-氧-异丙叉基-a-D-半乳糖的核磁共振数据与普通六元环的船式或椅式构象大不相同,进一步通过分子力学模型MMP2的计算,发现它具有扭船式的分子构象(Twist boat).

To investigate the actual conformation of 6-azide-6-deoxy-l ,2; 3,4-di-O-isopropyli-dene-α-D-galactopyranose, molecular mechanics simulation was carried out by MMP2 model indcating a twist boat conformation, and furthermore the Cremer Pople pukering parameters were calculated in order to verify the simulated result.