Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2‐Substituted‐Alkynyl‐1‐Sulfonyl Fluoride (SASF) Hubs
作者:Christopher J. Smedley、Gencheng Li、Andrew S. Barrow、Timothy L. Gialelis、Marie‐Claire Giel、Alessandra Ottonello、Yunfei Cheng、Seiya Kitamura、Dennis W. Wolan、K. Barry Sharpless、John E. Moses
DOI:10.1002/anie.202003219
日期:2020.7.20
Diversity Oriented Clicking (DOC) is a unified click‐approach for the modular synthesis of lead‐like structures through application of the wide family of click transformations. DOC evolved from the concept of achieving “diversity with ease” , by combining classic C−C π‐bond click chemistry with recent developments in connective SuFEx‐technologies. We showcase 2‐Substituted‐Alkynyl‐1‐Sulfonyl Fluorides
Exploiting Synergistic Catalysis for an Ambient Temperature Photocycloaddition to Pyrazoles
作者:Christopher P. Lakeland、David W. Watson、Joseph P. A. Harrity
DOI:10.1002/chem.201904210
日期:2020.1.2
Sydnone-based cycloaddition reactions are a versatile platform for pyrazole synthesis, however they operate under harsh conditions (high temperature and long reaction times). Herein we report a strategy that addresses this limitation utilizing the synergistic combination of organocatalysis and visible-light photocatalysis. This new approach proceeds under ambient conditions and with excellent levels
β-Diarylsydnone-l-alanines were designed and introduced into peptides allowing photo-cyclization only in phosphate containing buffer with concomitant fluorescence generation in live cells.
Self-assembly of chiral mesoionic heterocycles into smectic phases: a new class of polar liquid crystal
作者:C.V. Yelamaggad、Manoj Mathews、Uma S. Hiremath、D.S. Shankar Rao、S. Krishna Prasad
DOI:10.1016/j.tetlet.2005.02.084
日期:2005.4
The molecular design, synthesis and characterization of the first examples of both classical and non-conventional chiral mesoionic (mesomeric + ionic) liquidcrystals derived from sydnones are described. The occurrence of chiralsmectic phases in these novel compounds was evidenced by optical microscopy, calorimetry and X-ray studies.