Triarylmethyl radicals and the use of inert carbon free radicals in MRI
申请人:Nycomed Imaging AS
公开号:US05599522A1
公开(公告)日:1997-02-04
A radical compound of formula Ia .C(Ar.sup.12).sub.3 (Ia) wherein: each Ar.sup.12, which may be the same or different, represents a 6-membered carbocyclic, at least one group Ar.sup.12 being a group Ar.sup.1 ; each group Ar.sup.1 represents a 6-membered ring optionally substituted at the or any ortho carbon by a group R.sup.1, R.sup.2, R.sup.3 or R.sup.4, at the or any meta carbon by a group R.sup.2 or R.sup.3, and at any para carbon by a group R.sup.1, R.sup.2, R.sup.3 or R.sup.4, with the proviso that no more than two ring carbons are unsubstituted; each of R.sup.1, R.sup.2, R.sup.3 or R.sup.4, which may be the same or different, independently represents a group of formula --M, --XM, --XAr.sup.2 or --Ar.sup.2 ; M represents a water solubilizing group, each group X, which may be the same or different, represents an oxygen or sulphur atom or a NH or CH.sub.2 group.
Rust disease control by Aphanocladium album and/or Beauveria brongniartii
申请人:Subbiah Ven
公开号:US20070110726A1
公开(公告)日:2007-05-17
There is disclosed a method and composition for controlling rust disease in plants. Metabolites produced by
Aphanocladium album
mycoparasites are recovered and applied in an effective amount to plants at risk for acquiring rust disease More specifically, the application of the metabolite converts infective urediniospores that cause rust disease into non-infective teliospores. In a more specific aspect, the metabolite is reacted with another substance or under a specific reaction to result in a different compound which is also effective against rust disease.
Stereocontrolled [4+2]-Annulation Accessing Dihydropyrans: Synthesis of the C1a-C10 Fragment of Kendomycin
作者:Jason T. Lowe、James S. Panek
DOI:10.1021/ol0501875
日期:2005.4.14
[reaction: see text] Development of new organosilane reagents bearing C-centered chirality where the stereocenter is fully substituted, and their use in the stereocontrolled synthesis of cis- and trans-dihydropyrans containing a trisubstituted olefin is described. The reagents participate in Lewis acid promoted [4+2]-annulations providing useful levels of selectivity with both aliphatic and aromatic
Synthesis of a highly crystalline, covalently linked porous network
申请人:Lavigne John J.
公开号:US10273339B2
公开(公告)日:2019-04-30
Porous networks are described linked by boronates. Also described are processes for producing the porous networks. The porous networks are formed by reacting a polyboronic acid with itself or with a polydiol, a polydiamine, or a polyamino alcohol. The resulting boronate linkage is covalently bonded. The characteristics and properties of the resulting porous material can be varied and altered by changing the reactants and by incorporating functional groups into the reactants. Of particular advantage, the porous materials can be formed at or near atmospheric pressure and at low temperature in the presence of one or more solvents.