Relationship of the anionic behavior of unsaturated medium-ring alcohols to structure. Generation and antarafacial cyclization of coiled 8.pi.-electron carbanions
[EN] ARYL- AND HETEROARYLCARBONYL DERIVATIVES OF SUBSTITUTED NORTROPANES, MEDICAMENTS CONTAINING SUCH COMPOUNDS AND THEIR USE<br/>[FR] DÉRIVÉS ARYLE ET HÉTÉROARYLCARBONYLE DE NORTROPANES SUBSTITUÉS, MÉDICAMENTS CONTENANT DE TELS COMPOSÉS ET LEURS APPLICATIONS
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2010023161A1
公开(公告)日:2010-03-04
The present invention relates to compounds defined by formula (I) wherein the groups R1 and R2 are defined as in claim 1, possessing valuable pharmacological activity. Particularly the compounds are inhibitors of 11 β-hydroxysteroid dehydrogenase (HSD) 1 and thus are suitable for treatment and prevention of diseases which can be influenced by inhibition of this enzyme, such as metabolic diseases, in particular diabetes type 2, obesity, and dyslipidemia.
[EN] CURCUSONE DITERPENOIDS AND USES THEREOF<br/>[FR] DITERPÉNOÏDES DE CURCUSONE ET LEURS UTILISATIONS
申请人:PURDUE RESEARCH FOUNDATION
公开号:WO2022072266A1
公开(公告)日:2022-04-07
The present disclosure provides the first asymmetric total synthesis and target identification of the curcusone natural products. The novel convergent synthesis is built upon a cheap and abundant chiral pool molecule (8) and features a thermal [3,3]-sigmatropic rearrangement and an FeCl3-promoted global hydrolysis/adol condensation cascade to rapidly construct the critical cycloheptadienone core. By performing chemoproteomics with the alkyne probe 37, we identified the previously "undruggable" oncogenic protein BRAT1 as a key cellular target of 1d. Furthermore, 1d inhibits BRAT1 in cancer cells, thereby reducing cancer cell migration, increasing susceptibility to DNA damage, and inducing chemosensitization to the approved drug etoposide. Compound 1d is the first known small-molecule inhibitor for BRAT1, a master regulator of the DDR and DNA repair. Composition matters and methods of uses are within the scope of this disclosure.
Photochemical reactions, 135th communication Photochemistry of Homoconjugated Cyclobutanones. II. Decisive Effect ofgem- Dimethyl Substitution on the Course of the Oxa-di-?-methane Rearrangement
作者:Terry A. Lyle、Hari Babu Mereyala、Alfons Pascual、Bruno Frei
DOI:10.1002/hlca.19840670319
日期:1984.5.2
The synthesis and photolysis of the spirocyclobutanones 4–7 incorporating a cyclohexa-, cyclohepta- and cyclooctadiene moiety, respectively, is described. On triplet excitation, these compounds undergo isomerization via a 1,2-acyl shift involving one or both double bonds of the diene system. The presence of a gem-dimethyl group as in 1, 4 and 7 dramatically changes the photoproduct distribution, since
A convenient preparation of cyclohepta-2,4-dienone: isomerisation of protonated cyclohepta-3,5-dienone to protonated cyclohepta-2,4-dienone
作者:K. E. Hine、R. F. Childs
DOI:10.1039/c3972000144b
日期:——
Protonatedcyclohepta-3,5-dienone has been shown to isomerise cleanly to protonatedcyclohepta-2,4-dienone in FSO3H at +10°; quenching of the acid solution affords a convenientpreparation of cyclohepta-2,4-dienone.
Pyrolysis and UV photoelectron spectroscopy of bicyclo[3.2.0]hept-6-en-2-one; preparation and detection of cyclohepta-2(Z),4(E)-dien-1-one
作者:Tom Bajorek、Nick H. Werstiuk
DOI:10.1039/b111602a
日期:2002.3.7
Flashvacuumpyrolysis of bicyclo[3.2.0]hept-6-en-2-one (1) in the source chamber of a UV photoelectron (PE) spectrometer using a CW CO2 laser as a directed heat source facilitated an electrocyclic ringexpansion to yield the transient species cyclohepta-2(Z),4(E)-dien-1-one (2), the PE spectrum of which was compared to that of an authentic sample of cyclohepta-2(Z),4(Z)-dien-1-one (4) and confirmed