Palladium-catalyzed three-component tandem reaction of sulfonyl hydrazones, aryl iodides and allenes: highly stereoselective synthesis of (Z)-α-hydroxymethyl allylic sulfones
作者:Yunlei Hou、Qi Shen、Liangyu Zhu、Yufei Han、Yanfang Zhao、Mingze Qin、Ping Gong
DOI:10.1039/c7ra08208h
日期:——
Sulfonyl hydrazones have been identified as an excellent sulfonyl anion surrogate in the base and Pd0-catalyzed three-component tandemreaction with aryl iodides and allenes for the synthesis of functionalized allylic sulfones. By forming a stabilized six-membered palladacycle intermediate, the reaction led to the desired higher substituted allylic sulfones with excellent Z selectivities and high yields
Tetrazolylphenyl pivalate derivatives and medicinal composition
申请人:Wakamoto Pharmaceutical Co., Ltd.
公开号:US05602161A1
公开(公告)日:1997-02-11
The tetrazolylphenyl pivalate of the the following general formula or a pharmaceutically acceptable salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a lower alkyl group or other substituents; an elastase-inhibitory composition, a composition for preventing and treating emphysema and a composition for preventing and treating endotoxin-induced lung disorders each comprising the foregoing tetrazolylphenyl pivalate derivative or a non-toxic or acid-addition salt thereof.
Unexpected Cyclization Product Discovery from the Photoinduced Bioconjugation Chemistry between Tetrazole and Amine
作者:Juan Zhang、Jinlu Liu、Xianfeng Li、Yunzhu Ju、Yangfeng Li、Gong Zhang、Yizhou Li
DOI:10.1021/jacs.3c11574
日期:2024.1.24
amine to afford a new 1,2,4-triazole cyclization product. Given the significance of functionalized N-heterocycles in medicinal chemistry, we successfully harnessed the serendipitously discovered reaction to synthesize both pharmacologically relevant DNA-encoded chemical libraries (DELs) and small molecule compounds bearing 1,2,4-triazole scaffolds. Furthermore, the mild reactionconditions and stable 1