Codendronized polymers pendent with Frechet-type poly(benzyl ether) dendron and polyester dendron alternating structure have been produced by combining macromonomer and graft-from approach. Alternating copolymerization of the styryl dendrons of three generations and N-(2-hydroxyethyl)maleimide was used to prepare the polymer backbone bearing the first kind of dendritic wedges, then polyester dendrons were grown up from the pendant hydroxy groups through iterative esterification and deprotection reactions. Then, a kind of codendronized polymer bearing different dendritic wedges with an alternating structure was thus obtained. Since the pendent dendrons were different and each of them was well-defined, such codendronized polymer can be a multicompartment wormlike molecule.(C) 2007 Wiley Periodicals, Inc.