“…Deprotection of the MOM group of 25 , the last step, was attempted under the conditions using CF 3 CO 2 H/CH 2 Cl 2 , Dowex-50/MeOH, BF 3 ·OEt 2 , and (CH 2 SH) 2 /CH 2 Cl 2 to provide a mixture of products, whereas PPTS in refluxing n -BuOH was found to produce decarestrictine D ( 1 ) cleanly in 81% yield. The 1 H and 13 C NMR spectra of 1 measured in CDCl 3 and in CD 3 OD were identical with those reported. 1c,, In addition, the specific rotation ([α] 24 D −68 ( c 0.066, MeOH)) and mp (121−123 °C, recrystallized from CH 2 Cl 2 /hexane) were also in good agreement with the reported data: [α] 20 D −62 ( c 1.0);1a 118−120 °C (synthetic); 116 °C (natural) 1b…”