New Building Blocks--2021.09.10

2021-09-10

1.CAS NO:1577222-14-0        4-O-[2-(2,5-dioxopyrrolidin-1-yl)ethyl] 1-O-methyl (E)-but-2-enedioate        
2.CAS NO:26775-14-4            α-D-Gulofuranose, 1,2:5,6-bis-O-(1-methylethylidene)-, 3-acetate          
3.CAS NO:157037-56-4          alpha-D-erythro-Pentofuranous-2-ulose 1,3,5-tribenzoate                 
4.CAS NO:20590-57-2            1,2-O-Isopropylidene-5-?O-?(triphenylmethyl)?-alpha-D-?ribofuranose
5.CAS NO:37077-81-9            alpha-D-ribofuranose,1,2-O-(1-methylethylidene)-