Sulfonated poly(phthalazinone)s (SPPENK, SPPESK and SPPBEK) were prepared by direct polymerization reaction from sulfonated monomers. The novel acid-base membra
A new triterpenoid saponin,named clematiganoside A(1),was isolated from the whole plant of Clematis ganpiniana.Its structure was elucidated on the basis of 1D,2
<正>Direct reduction of seven benzoic acids to alcohols via sodium borohydride-bromine (NaBH_4-Br_2)reagent was developed.The isolated yields for the seven acid