analysis c 66 63 h 6 33 theory c 66 65 h 6 32 synthesis of g0 pglla oh u2014 pd c 10 10 w w was added to a solution of benzylidene protected g0 pglla 5 49 g 13 2 mmol in etoac meoh 3 1 40 ml the flask was evacuated and filled with 50 psi of h 2 before shaking for 20 minutes the catalyst was filtered and washed with etoac 10 ml the filtrate was then evaporated to give 2 94 g of a colorless viscous oil 94 0 yield 1 h nmr obtained theory 238 m z m elemental analysis c 45 52 h 7 65 theory c 45 37 h 7 62 synthesis of benzylidene protected g1 pglla bzld u2014 2 cis 1 3 benzylidene glycerol 2 propionic acid 4 41 g 17 50 mmol g0 pglla 0 791 g 3 32 mmol and dpts 2 46 g 8 36 mmol were dissolved in dmf 80 ml the reaction flask was flushed with nitrogen and then dcc 5 31 g 25 74 mmol was added the contents were stirred at room temperature for 14 hours under nitrogen atmosphere the dmf was removed under high.