凡是棕榈酸酯和叶磷脂的合成物都应与邻苯二甲酰磷-二氯膦酸酯类化合物进行化学比对。英文名称:Eswird ein Verfahren zur Herstellung von Palmitoyl-Kephalinen und einiger Analogen beschrieben 合成论的作者与文学家一起讨论了氨基酮基磷酸酯单酯的研究。
Twenty-seven alkyl analogs of lysophospholipid were synthesized and their structureantimicrobial activity relationships were examined. These analogs differed in the structures of the long-chain alkyl moiety at position 1 and the β-N-substituted aminoethylphosphoryl moiety at position 3, and in the presence or absence of the 2-methoxy group of the glycerol moiety. Many of the alkyl lysophospholipids were found to possess antimicrobial activities much more potent than those of naturally occuring lysolecithin and lecithin against Tetrahymena pyriformis W and a variety of fungi, including human pathogens. The maximal activity was observed with 2-methyl-1-tetradecylglycero-3-phosphocholines. 1-Alkyl-2-methylglycero-3-phosphocholines with longer as well as shorter alkyl chains tended to have lower antimicrobial activity. Alkyl lysophospholipids with pyridinioethyl instead of the choline group showed potent antifungal activity comparable to alkyl glycerophosphocholines with the corresponding alkyl group but lower antiprotozoal activity. The tetradecyl congeners in these two classes of compounds showed potent inhibitory activity against Trichophyton species, comparable to that of clotrimazole. In contrast, alkyl lysophospholipids with an ethanolamine moiety in the polar head group showed decreased activity. Changing the molecular backbone from glycerol to 1, 3-propanediol had little effect upon the activity, and the resulting 1-alkyl-2-deoxyglycero-3-phosphocholines displayed antimicrobial properties similar to those of 1-alkyl-2-methylglycero-3-phosphocholines.
Certain heterocyclic ammonio phosphate derivatives
申请人:Takeda Chemical Industries, Ltd.
公开号:US04542219A1
公开(公告)日:1985-09-17
Ethylene glycol derivatives, inclusive of salts thereof, which have the formula: ##STR1## wherein R.sup.1 is C.sub.8-26 aliphatic hydrocarbon residue; R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or lower alkyl which may be substituted, or --N.sup.+ R.sup.2 R.sup.3 R.sup.4 represents cyclic ammonio, exhibit inhibitory activity to multiplication of tumor cells and antimicrobial activity.
monitoring of acidsphingomyelinase (ASM) activity is crucial for investigating its role in lipid‐mediated signaling processes. In this study, we synthesized fluorescent phosphosphingolipids capable of FRET by phosphorodichloridate chemistry. These sphingomyelin analogues are substrates for recombinant human ASM and can be used to monitor ASM activity by fluorescence spectroscopy. Incubation with cell lysates
New carbamic acid esters, inclusive of salts thereof, which have the formula: ##STR1## wherein n is zero or 1; R.sup.1 and R.sup.2 independently represent --H, --OCH.sub.3 or --OCONHR.sup.6 ; in which R.sup.6 is C.sub.8-26 aliphatic hydrocarbon residue provided that at least one of R.sup.1 and R.sup.2 is --OCONHR.sup.6 ; and R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen or lower alkyl, or ##STR2## represents cyclic ammonio, exhibit inhibitory activity to multiplication of tumor cells and antimicrobial activity.