A method of modifying the taste of a consumable, comprising adding to a consumable base at least one compound of the formula I
in which
(a) A is selected from the moieties
(b) n is from 0-7, such that X is absent or a linear alkylene group in which n is from 1-7; and
(c) Z is absent and Y is a moiety selected from the groups —CHO, or —CH2OH; or
(d) Z is present and is a C1-7 linear alkane, and Y is selected from —CHOH, —CO, or —COC(CH3)O. The result is a consumable with enhanced mouthfeel and/or creaminess.
Regioselective aldol condensations of boron and tin furanolates with aldehydes: an improved synthesis of 2-(1′-hydroxyalkyl)butenolides
作者:Charles W. Jefford、Danielle Jaggi、John Boukouvalas
DOI:10.1039/c39880001595
日期:——
Boron and tin(II) 2-furanolates generated in situ from 2-(5H)-furanone and α-angelica lactone undergo regioselective aldolization with aldehydes to furnish the corresponding 2-(1′-hydroxyalkyl)butenolides in good yields; a new formal synthesis of (±)-litsenolide C1 and (±)-dihydromahubanolide is described.
A study of the structure-cytotoxic activity of the acetogenin of Annonaceae, muricatacin 1, is reported. Indeed, muricatacin 1 has shown promising antitumoral activity. Therefore several 5-hydroxy-4-alkanolides were prepared and then tested against KB and VERO cell lines. A few other analogues were synthesized and tested against both cell lines. Thus this work allowed us to better determine the pharmacophore of the molecule and to propose muricatacin 1 instead of a more complicated acetogenin of Annonaceae as a lead compound in the search for new antineoplastic agents.
Synthesis of furanone-Based natural product analogues with quorum sensing antagonist activity
作者:Thomas Hjelmgaard、Tobias Persson、Thomas B Rasmussen、Michael Givskov、John Nielsen
DOI:10.1016/s0968-0896(03)00295-5
日期:2003.7
The synthesis of 5- and 3-(1'-hydroxyalkyl)-substituted 5H-furan-2-ones 4a-d and 8a-d as well as 5-alkylidene-5H-furan-2-ones 5a-d is described. A study of the structure-activity relationship of these furanone-based natural product analogues towards two different quorum sensing systems is reported. Although the synthesized compounds are not as potent quorum sensing inhibitors as some natural counterparts and a synthetic analogue hereof, interesting structure-activity relationships are seen. (C) 2003 Elsevier Science Ltd. All rights reserved.