2.3 Synthesis of Main Chain H TBDMSO H 2. NaIo4 Bno Bno OH O Bno OH O PCC OH LiAIHA OH Bno OMe o Bno OMe o Bno OMe 1.(Me? PhSi)2NLi i 2. t BuMe 2 SiOSO2CF Bno OMe Ox o oPhSi Bno OMe OX O OH OSEM X=SIDMTB
BnO O H S O TBDMSO H B BnO OH O OX 1.HF 2.NaIO4 BnO O OH OH CH2N2 BnO O OH OMe LiAlH4 BnO OMe OH PCC BnO OMe O H O 1.(Me2PhSi)2NLi 2.t -BuMe2SiOSO2CF3 BnO OMe OX O X=SiDMTB O OSEM H (Me2PhSi)2NLi Cp2ZrCl2 BnO OMe OX O OH OSEM 2.3 Synthesis of Main Chain
DIBAL-H Me2C(OMe)2 Bno OMe OX O OH OSEM Bno OMe OX C、OOH Cr2O3(py)2l OPh OPh Bno OMe OX OO OH LiN(Pr-i)2 Bno OMe Ox o、O 1. NaBH4 2.H2/Pd/C 3.toluene reflux OH 1.H2O OMe 2.C2N oH OMe OH C、O Me OMe OMe oh O
BnO OMe OX O OH OSEM DIBAL-H Me2C(OMe) 2 BnO OMe OX O O OH Cr 2O3 (py) 2 BnO OMe OX O O O OPh H O O LiN(Pr-i) B O 2 n OMe OX O O OH O OPh O 1.NaBH4 2.H2 /Pd/C 3.toluene reflux OMe O O O O OH Me OH OH 1.H2O 2.C2N2 OMe OH O O OH OH O OMe OMe