Conjugation

2-Hydroxypyridine N-oxide (2-hydroxypyridine N-oxide, HOPO) is commonly referred to simply as HOPO. In published pharmaceutical process case studies, it can be found in amide coupling conditions used in combination with carbodiimides such as EDCI, especially in steps where racemization control, ...

In alcohol O-phosphorylation, dibenzyl N,N-diisopropylphosphoramidite does not correspond to a one-step construction of the free phosphate. Rather, it belongs to a stepwise synthetic route. In the initial stage, a protected phosphate fragment is first attached to the alcohol in the form of a ...