Scheme 1From: 177Lu-labelled macrocyclic bisphosphonates for targeting bone metastasis in cancer treatmentSynthesis of DOTA(MBP)2. (i) K2CO3, acetonitrile, 40 °C (ii) 1. TMS-Br, DCM, RT; 2. MeOH; 3. TFA/DCM, RTBack to article page