... Oxy-desilylation with PIDA/TBAF gives low to moderate yields of PyrCHROR 1 and QnCH 2 OR 1 (R 1 = H, Ac), while good yields of PyrCHROH and QnCH 2 OH are obtained when PIFA is used. Identifiers. journal ISSN : 0385-5414. Authors. Ian P. Andrews. ...