yl)-Thr in satisfactory yields, which are hydrogenated in the presence of PtO2 to give Boc-Ser(Chx)-OH and Boc-Thr(Chx)-OH in good yields. The O-Chx group is stable to various acidic and basic conditions including TFA and 20% piperidine in DMF. It is not removed with catalytic hydrogenation over Pd–charcoal. The Chx group is, however, removed quantitatively with 1 mol dm−3 trifluoromethanesulfonic
Cyclohexyl ether as a new hydroxy-protecting group for serine in solid-phase peptide synthesis
作者:Yasuhiro Nishiyama、Keisuke Kurita
DOI:10.1016/s0040-4039(98)02600-8
日期:1999.1
A new hydroxy-protecting group for Ser, cyclohexyl, has been developed, and itsapplication to the solid-phasepeptidesynthesis has been demonstrated successfully in combination with Nα-Boc protection and the Merrifield resin support.