摘要:
PROBLEM TO BE SOLVED: To provide compounds which are useful for the protection of organic compounds comprising at least one guanidino moiety and/or amino group, as protecting reagents in production of compounds; and processes for their preparation and their use as protecting reagents.SOLUTION: The invention relates to indolesulfonyl halogenides of the figure II; preparation processes based on side chain introduction; and introduction to a guanidino group in a peptide side chain.