中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
beta-D-呋喃核糖 | β-D-ribofuranose | 36468-53-8 | C5H10O5 | 150.131 |
卡培他滨杂质25 | D-Ribose | 613-83-2 | C5H10O5 | 150.131 |
—— | 5-deoxy-2,3-O-isopropylidene-D-ribofuranose | 132064-84-7 | C8H14O4 | 174.197 |
甲基-5-脱氧-2,3-O-异亚丙基-beta-D-呋喃核糖苷 | methyl 5-deoxy-2,3-O-isopropylidene-β-D-ribofuranoside | 23202-81-5 | C9H16O4 | 188.224 |
We report the first total synthesis of trachycladines A (10 steps, 34.2% overall yield) and B (11 steps, 35.0% overall yield) by using 5-deoxy-1,2,3-tri-O-acetyl-β-D-ribofuranose as the starting material. The critical step was the SnCl4 assisted regio- and steroselective deprotection of perbenzylated 1-