11-hydroxy-5h-pyrrolo[2,1-c][1,4]benzodiazepin-5-one derivatives as key intermediates for the preparation of c2 substituted pyrrolobenzodiazepins

摘要

Compounds and method of synthesis of compounds of formula III:
and salts, solvates and chemically protected forms thereof, wherein:
R 15 is optionally substituted C 1-12 alkyl; R 10 and R 16 together form a double bond between N10 and C11, or R 10 is H and R 16 is OH; R 7 is independently selected from H, R, OH, OR, SH, SR, NH 2 , NHR, NRR', nitro, Me 3 Sn and halo, and the compound is a dimer with each monomer being of formula (III), where the R 8 groups of each monomers form together a dimer bridge.