Carbanionic displacement reactions at phosphorus. Part III. Cyanomethylphosphonate vs. cyanomethylenediphosphonate. Synthesis and solid-state structures
[EN] NOVEL PRMT5 INHIBITORS<br/>[FR] NOUVEAUX INHIBITEURS DE PRMT5
申请人:AMGEN INC
公开号:WO2021163344A1
公开(公告)日:2021-08-19
Described herein are compounds of Formula I and pharmaceutically acceptable salt thereof, stereoisomers, tautomers as well as pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity and may have use in treating proliferative, metabolic and blood disorders. Compounds of Formula I have the following structure: (I)
Formal Synthesis of the Anti-Angiogenic Polyketide (−)-Borrelidin under Asymmetric Catalytic Control
作者:Ashoka V. R. Madduri、Adriaan J. Minnaard
DOI:10.1002/chem.201001284
日期:——
potent anti‐angiogenesis activity. This paper describes its formal totalsynthesis by the most efficient route to date. This modular approach takes optimal benefit of asymmetric catalysis and permits the synthesis of analogues; in addition, the high yields and selectivities obtained eliminate the need for separation of stereoisomers. The upper half of borrelidin has been accessed by iterative copper‐catalysed
The construction of novel borrelidin analogues is reported in which the northern fragment is truncated to a simple hydroxyundecanecarboxylate and the original cyclopentanecarboxylic acid in the southern fragment is replaced with different six-membered rings. The required precursors were prepared by cross metathesis of the appropriate carbocycle-based homoallylic alcohol with crotonaldehyde followed
The totalsynthesis of borrelidin has been achieved. The best feature of our synthetic route is SmI(2)-mediated intramolecular Reformatsky-type reaction for macrocyclization after esterification between two segments. The two key segments were synthesized through chelation-controlled carbotitanation, chelation-controlled hydrogenation, stereoselective Reformatsky reaction, and MgBr(2).Et(2)O-mediated
Multisubstituted Cyclohexene Construction through Telescoped Radical-Addition Induced Remote Functional Group Migration and Horner–Wadsworth–Emmons (HWE) Olefination
作者:Xing-Gui Zhang、Xin Li、Chi Zhang、Chao Feng
DOI:10.1021/acs.orglett.1c03821
日期:2021.12.17
photoredox-promoted alkene difunctionalization via remotefunctional group migration with concomitant intramolecular Horner–Wadsworth–Emmons (HWE) olefination. The characteristic feature of this protocol resides in the fact that the follow-up requiring ketone functionality for ring-closing olefination is in situ unveiled from the otherwise inert tertiary alcohol by the preceding alkene difunctionalization