Synthesis of Bridged Polycyclic Ring Systems via Carbene Cascades Terminating in C–H Bond Insertion
摘要:
A carbene cascade reaction that constructs functionalized bridged bicyclic systems from alkynyl diazoesters is presented. The cascade proceeds through diazo decomposition, carbene/alkyne metathesis, and C H bond insertion. The diazoesters are easily synthesized from cyclic ketones. Substrate ring size and substitution patterns control the connectivity and diastereomeric preference found in the products.
Organoboranes. 38. A facile and highly efficient addition of B-1-alkynyl-9-borabicyclo[3.3.1]nonanes to aldehydes and ketones: an exceptionally chemoselective synthesis of propargylic alcohols
The invention relates to thiazole compounds of Formula I and Formula II and compositions thereof useful for treating diseases mediated by protein kinase B (PKB) where the variables have the definitions provided herein.
The invention also relates to the therapeutic use of such thiazole compounds and compositions thereof in treating disease states associated with abnormal cell growth, cancer, inflammation, and metabolic disorders.
A highly enantioselective α‐ketol rearrangement has been developed. In the presence of a chiral Cu‐bisoxazoline complex, achiral β‐hydroxy‐α‐dicarbonyls were isomerized to chiralα‐hydroxy‐β‐dicarbonyls and their bicyclic derivatives in excellent yields and enantioselectivities. Enantioenriched 2‐acyl‐2‐hydroxy cyclohexan‐1‐ones, dihydroxyhexahydrobenzofuranones, and dihydroxyhexahydro‐cycloheptafuranones
prop-2-yn-1-ol and alkynediol transitionmetalcomplexes of Pt and Ni has been examined in light of the intermolecular interactions and hydrogen-bonding patterns established by alkyne monoalcohols and diols in the solid state. The analysis has been based on the crystal structure determination of the alcohols 1,1-dimethyl-3-tert-butylprop-2-yn-1-ol (1), tert-butylbis(ethyl)prop-2-yn-1-ol (2), tert-butylcyclohexylprop-2-yn-1-ol
The invention relates to heterocyclic compounds of Formula I and compositions thereof useful for treating diseases mediated by protein kinase B (PKB) where the variables have the definitions provided herein.
The invention also relates to the therapeutic use of such compounds and compositions thereof in treating disease states associated with abnormal cell growth, cancer, inflammation, and metabolic disorders.