Novel anthraquinones and process for the preparation and method of use thereof
申请人:Nair G. Muraleedharan
公开号:US20050267307A1
公开(公告)日:2005-12-01
A process for the preparation of hydroxyl substituted anthraquinones is described. The process couples a phthalic anhydride (substituted or unsubstituted) to benzene ring moiety substituted with at least two hydroxyl groups. Remaining hydroxy groups were converted to methoxy groups in some anthraquinones. The compounds are particularly useful for the treatment of parasitic diseases. Also, a method of treating or preventing malaria, filariasis schistosomiasis and other parasitic diseases using anthraquinones.
NOVEL MACROCYCLIC DERIVATIVES, PROCESS FOR PREPARING SAME AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME
申请人:LES LABORATOIRES SERVIER
公开号:US20200253993A1
公开(公告)日:2020-08-13
Compound of formula (I):
wherein A
1
, A
2
, R
a
, R
b
, R
c
, R
d
, R
3
, R
4
, X, Y and G are as defined in the description,
and their use in the manufacture of medicaments.
作者:Troy A. Bemis、James J. La Clair、Michael D. Burkart
DOI:10.1039/d0cc05395c
日期:——
A parallel, one-pot assembly approach to proteolysis targeting chimeras (PROTACs) is demonstrated utilizing activated esters generated in situ, and tracelessStaudingerligation chemistry. The method described allows for rapid structure–activity relationship studies of PROTAC linker variants. Two previously studied systems, cereblon and BRD4 degraders, are examined as test cases for the synthetic method
Study of<i>cis/trans</i>and<i>endo/exo</i>Diastereoselectivity in the [4+3]-Cycloaddition Reaction of 2-Functionalized Furans and Dimethyloxyallyl Cation: Preparation of Versatile Cycloheptane Synthons
作者:Angel M. Montaña、Sandra Ribes、Pedro M. Grima、Francisca García
DOI:10.1246/cl.1997.847
日期:1997.9
A study on the influence of steric and electronic effects of a function attached at C-2 of furans in the yield and diastereoselectivity of [4+3] cycloaddition reactions with oxyallyl cations is presented. In almost all studied furans a cis diastereospecificity and a high endo diastereoselectivity is observed. Increasing bulkyness of the function attached at C-2 of furans, increases the endo diastereoselectivity, but decreases yield. Increasing the electronic density of the furan system, by an electron donating group attached at C-2, increases yield and diastereoselectivity.
Complete assignment of1H and13C NMR data and establishment of the relative stereochemistry of C-1-functionalized 2,4-dimethyl-8-oxabicyclo[3.2.1] oct-6-en-3-one derivatives
作者:Angel M. Montaña、Pedro M. Grima、Francisca García
The total assignment of the 1H and 13C NMR spectra of 24 cis‐endo and 15 cis‐exo diastereoisomers of C‐1‐substituted 2,4‐dimethyl‐8‐oxabicyclo[3.2.1]oct‐6‐en‐3‐one derivatives was deduced from the concerted application of DEPT, COSY, HETCOR, HMBC, HMQC and PS‐NOESY experiments. The relative stereochemistry of major (cis‐endo) and minor (cis‐exo) diastereoisomers was established on the basis of correlation