Abstract We have successfully developed a synthetic strategy for the combinatorial solid- phase synthesis of carbohydrate clusters on a tree-type linker with two types of orthogonally cleavable parts. The combination of three types of spacers, two types of carbohydrate ligands, and two types of orthogonal cleavage provided a 12-member carbohydrate cluster library (6 dimers and 6 tetramers).
![1-hydrazino[1,4]benzodioxino[2,3-d]pyridazine结构式](https://image.chemsrc.com/caspic/378/681440-39-1.png)