The crystal structure of N(α)-t-butoxycarbonyl-N(π)- benzyloxymethyl-L-histidine
Brown T., Jones JH., Wallis JD.
X-Ray analysis of N(α)-t-butoxycarbonyl-N(π)-benzyloxymethyl-L- histidine hydrate has confirmed that the im-protecting group is located on the π-nitrogen atom, in agreement with deductions from n.m.r. coupling constants.