Fig. 4. Pd-Cap1-promoted depropargylation of 3 (mean ± s.e.m., n = 2) in the presence of different additives, 1.0 equiv. with respect to Pd (a), and of increasing concentrations of BSA (b). The reaction is also effective in the presence of higher amounts of the additives as indicated in (a) (see Fig. S12).† .