Linfuranones B and C, Furanone-Containing Polyketides from a Plant-Associated Sphaerimonospora mesophila
摘要:
Two new furanone-containing polyketides, linfuranones B and C, were isolated from a plant-associated actinomycete of the genus Sphaerimonospora. Their structures were determined by NMR and MS spectroscopic analyses, and the absolute configurations were established by anisotropic methods and chemical degradation approaches. In silico analysis of biosynthetic genes suggested that linfuranone B is generated from linfuranone C by oxidative cleavage of the polyketide chain. Linfuranones B and C induced preadipocyte differentiation into matured adipocytes at 20-40 mu M without showing cytotoxicity.
[EN] SYNTHESIS OF OLIGOKETIDES<br/>[FR] SYNTHESE DE POLYCETIDES
申请人:KOSAN BIOSCIENCES INC
公开号:WO2000044717A2
公开(公告)日:2000-08-03
Facile methods for preparing diketide and triketide thioesters are disclosed. The resulting thioesters may be used as intermediates in the synthesis of desired polyketides, and may contain functional groups which ultimately reside in side chains on the resulting polyketide and thus can be used further to manipulate the polyketide so as to form derivatives. The polyketides produced may also be tailored by glycosylation, hydroxylation and the like. New polyketides and their derivatives and tailored forms are thereby produced.
[EN] MEDIUM CHAIN LENGTH PHA COPOLYMER AND PROCESS FOR PRODUCING SAME<br/>[FR] COPOLYMERE PHA A LONGUEUR DE CHAINE MOYENNE ET PROCEDE DE PRODUCTION DE CELUI-CI
申请人:PROCTER & GAMBLE
公开号:WO2001055436A1
公开(公告)日:2001-08-02
Poly-3-hydroxyalkanoates (PHAs) that includes medium length 3-hydroxyacyl monomers and a process for producing the same comprising culturing a microorganism with a medium chain fatty carbon source and a fatty acid oxidation inhibitor. Using the process of this invention, microorganisms which normally incorporate only short chain fatty acids, produce PHAs containing short and medium chain 3-hydroxyacyl monomers.