PRODRUGS OF NH-ACIDIC COMPOUNDS: ESTER, CARBONATE, CARBAMATE AND PHOSPHONATE DERIVATIVES
申请人:Blumberg Laura Cook
公开号:US20110319422A1
公开(公告)日:2011-12-29
The invention provides a method of sustained delivery of a lactam, imide, amide, sulfonamide, carbamate or urea containing parent drug by administering to a patient an effective amount of a prodrug compound of the invention wherein upon administration to the patient, release of the parent drug from the prodrug is sustained release. Prodrug compounds suitable for use in the methods of the invention are labile conjugates of parent drugs that are derivatized through carbonyl linked prodrug moieties. The prodrug compounds of the invention can be used to treat any condition for which the lactam, imide, amide, sulfonamide, carbamate or urea containing parent drug is useful as a treatment.
The present invention relates to the use of piperazine compounds of the formula I
or of the agriculturally useful salts of piperazine compounds of the formula I as herbicides, where in formula I the variables are as defined in the claims and the description.
Moreover, the invention relates to compositions comprising, in addition to auxiliaries customary for formulating crop protection agents, piperazine compounds of the formula I or agriculturally useful salts of I, and to a process for preparing these compositions. Furthermore, the invention relates to certain piperazine compounds of the formula I, a process for preparing piperazine compounds of the formula I and a method for controlling unwanted vegetation which comprises treating plants, their seeds and/or their habitat with at least one piperazine compound of the formula I.
The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.
The design and synthesis of a novel organophosphorus compound containing the structure of both β-amino acid and β-aminophosphonate
作者:Han Bing Teng
DOI:10.1016/j.cclet.2010.03.035
日期:2010.7
novel organophosphoruscompoundcontaining the structure of both β-amino acid and β-aminophosphonate is designed and synthesized. Arbuzov reaction with P(OEt) 3 , the N -Boc protected iodide 3 cannot provide the desired product but 2-oxazolidinone 4 because of the neighboring-group participation of the Boc moiety. To avoid the intramolecular participation of the carbamates, the Ts protecting group is
The invention relates to the use of piperazine compounds of formula (I) or the agriculturally useful salts of piperazine compounds of formula (I) as herbicides, the variables in formula (I) being defined as cited in the claims and the description.