The present invention provides novel sixteen-membered macrolide compounds that are useful as anti-infective agents or as intermediates thereto. The present invention also provides methods for the preparation of these compounds, and methods and formulations for their use. In one aspect of the present invention, sixteen-membered macrolide possessing a side chain Z are provided where Z is aliphatic, aryl, alkylaryl, halide, ═NOR
3
, ═NNHR
3
, or —W—R
3
where W is O, S, NC(═O)R
4
, NC(═O)OR
4
, NC(═O)NHR
4
or NR
4
where R
3
and R
4
are each independently hydrogen, aliphatic, aryl or alkylaryl. In another aspect of the present invention, bicyclic compounds are provided where one of the cyclic-components is a sixteen-membered macrolide and the other is a cyclic moiety whose cyclic structure is formed by between 3 and 10 atoms. In another aspect of the present invention, sixteen-membered macrolide compounds that bind to the domain II region of the 23S RNA are provided.
Sugar-Pirating as an Enabling Platform for the Synthesis of 4,6-Dideoxyhexoses
作者:Yinan Zhang、Jianjun Zhang、Larissa V. Ponomareva、Zheng Cui、Steven G. Van Lanen、Jon S. Thorson
DOI:10.1021/jacs.9b13766
日期:2020.5.20
Stereoselective 2'- and 3'-reduction of key spectinomycin-derived intermediates ena-bled facile access to all eight possible 2,3-stereoisomers of 4,6-dideoxyhexoses as well as representative 3,4,6-trideoxysugars and 3,4,6-trideoxy-3-aminohexoses. In addition, the method was applied to the synthesis of two function-alized sugars commonly associated with macrolideantibiotics - the 3-O-alkyl-4,6-dideoxysugar
Compounds of formula (1)
wherein R represents a sugar residue or an acylated derivative thereof;
R¹ represents a methyl, ethyl or isopropyl group;
Y¹ is -CH₂, Y² is -CH- and X represents
[wherein R² represents a hydrogen atom or a group OR⁶ (where OR⁶ is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms) and R³ represents a hydrogen atom, or R² and R³ together with the carbon atom to which they are attached represent >C=0, >C=CH₂ or >C=NOR⁷ (where R⁷ represents a hydrogen atom, a C₁₋₈ alkyl group or a C₃₋₈ alkenyl group) and the group >C=NOR⁷ is in the E configuration] or -Y¹-X-Y²- represents -CH=CH-CH- or -CH₂-CH=C- ; and R⁴ represents a group OR⁶ as defined above and R⁵ represents a hydrogen atom, or R⁴ and R⁵ together with the carbon atom to which the are attached represent >C=0 or >C=NOR⁸ (where R⁸ is as defined above for R⁷), and salts thereof. The compounds may be used to control nematode, acarine, insect or other pests.
Recombinant chalcomycin polyketide synthase and modifying genes
申请人:——
公开号:US20040132055A1
公开(公告)日:2004-07-08
Domains of chalcomycin polyketide synthases and modification enzymes and polynucleotides encoding them are provided. Methods to prepare chalcomycin in pharmaceutically useful quantities are described, as are methods to prepare chalcomycin analogs and other polyketides using the polynucleotides encoding chalcomycin polyketide synthase domains or modifying enzymes.