A new alkaloid has been isolated from the root of Patrinia scabra. Its structure was elucidated as 2'-acetamido-3'-phenyl propyl 2-benzamido-3-phenyl propionate by extensive spectroscopic analysis.
From the leaves of Rhododendron latoucheae (Ericaceae), two new natural phenolic compounds named (+)-rhodolatouchol 1 and isoepirhododendrin 4 were identified. Six other known compounds, (+)-rhododendrol, epirhododend...From the leaves of Rhododendron latoucheae (Ericaceae), two new natural phenolic compounds named (+)-rhodolatouchol 1 and isoepirhododendrin 4 were identified. Six other known compounds, (+)-rhododendrol, epirhododendrin, 4-[3'-O-beta-D-glucopyranosyl-4'-hydroxyphenyl]-2-butanone, 4-(4'-O-beta-D-glucopyranosylphenyl)-2-butanone, benzyl-O-beta-D-glucopyranoside and arbutin were also obtained.展开更多
Homopolymerization of N-pyrimidinyl acrylamide (NPA) was reported for the first time. The polymer (polyNPA) was soluble only in acidic media and fluoroalcohols, and only in fluoroalcohol was homogeneous polymerization...Homopolymerization of N-pyrimidinyl acrylamide (NPA) was reported for the first time. The polymer (polyNPA) was soluble only in acidic media and fluoroalcohols, and only in fluoroalcohol was homogeneous polymerization of NPA feasible. 1H NMR analysis proved that a 1:1 H-bonding complex could be formed between NPA and α,α-bis(trifluoromethyl)phenyl propan-2-ol (BTMP). Cumyl dithiobenzoate mediated reversible addition-fragmentation chain transfer (RAFT) polymerization of NPA in BTMP was carried out. 1H NMR analyses proved that the molecular weight increased linearly with the monomer conversion. The polymer prepared in conventional solvents was atactic while in protic media the syndiotacticity was slightly enhanced.展开更多
文摘A new alkaloid has been isolated from the root of Patrinia scabra. Its structure was elucidated as 2'-acetamido-3'-phenyl propyl 2-benzamido-3-phenyl propionate by extensive spectroscopic analysis.
文摘From the leaves of Rhododendron latoucheae (Ericaceae), two new natural phenolic compounds named (+)-rhodolatouchol 1 and isoepirhododendrin 4 were identified. Six other known compounds, (+)-rhododendrol, epirhododendrin, 4-[3'-O-beta-D-glucopyranosyl-4'-hydroxyphenyl]-2-butanone, 4-(4'-O-beta-D-glucopyranosylphenyl)-2-butanone, benzyl-O-beta-D-glucopyranoside and arbutin were also obtained.
文摘Homopolymerization of N-pyrimidinyl acrylamide (NPA) was reported for the first time. The polymer (polyNPA) was soluble only in acidic media and fluoroalcohols, and only in fluoroalcohol was homogeneous polymerization of NPA feasible. 1H NMR analysis proved that a 1:1 H-bonding complex could be formed between NPA and α,α-bis(trifluoromethyl)phenyl propan-2-ol (BTMP). Cumyl dithiobenzoate mediated reversible addition-fragmentation chain transfer (RAFT) polymerization of NPA in BTMP was carried out. 1H NMR analyses proved that the molecular weight increased linearly with the monomer conversion. The polymer prepared in conventional solvents was atactic while in protic media the syndiotacticity was slightly enhanced.
