6-Heteroarylpyridoindolone Derivatives, Their Preparation and Therapeutic Use Thereof
申请人:MUNEAUX Yvette
公开号:US20080262020A1
公开(公告)日:2008-10-23
The disclosure relates to compounds of formula (I):
wherein R
1
, R
2
, R
3
, R
4
, are R
5
are as defined in the disclosure; their preparation method, compositions containing the same and therapeutic use thereof.
Rhodium(<scp>iii</scp>)-catalyzed C–H annulation of 2-acetyl-1-arylhydrazines with sulfoxonium ylides: synthesis of 2-arylindoles
作者:He Li、Ye Lu、Xinxin Jin、Shuang Sun、Limei Duan、Jinghai Liu
DOI:10.1039/d0ra07701a
日期:——
An efficient Rh(III)-catalyzed synthesis of 2-arylindole derivatives via intermolecular C–H annulation of arylhydrazines with sulfoxonium ylides was accomplished. A variety of 2-acetyl-1-arylhydrazines with sulfoxonium ylides were converted into 2-arylindoles in satisfactory yields. Excellent selectivity and good functional group tolerance of this transformation were also observed.
通过芳基肼与锍叶立德的分子间 C-H 环化,实现了Rh( III ) 催化的 2-芳基吲哚衍生物的有效合成。各种具有锍叶立德的 2-乙酰基-1-芳基肼以令人满意的收率转化为 2-芳基吲哚。还观察到这种转化的优异选择性和良好的官能团耐受性。
Novel 17α-ethynylestradiol derivatives: Sonogashira couplings using unprotected phenylhydrazines
作者:Jeffrey B Arterburn、Kalla Venkateswara Rao、Marc C Perry
DOI:10.1016/s0040-4039(99)02205-4
日期:2000.2
The Pd/Cu catalyzed coupling of 17α-ethynylestradiol with halogenated amino-substrates was investigated. Iodophenylhydrazine and its protected derivatives reacted with 17α-ethynylestradiol to give 4-hydrazinophenyl derivatives without any degradation of the hydrazine group. Unprotected 3-, and 4-iodoaniline reacted similarly to produce the aminophenyl-derivatives. Protection of the amino group of halogenated
The present invention is related to the use of alkylidene pyrazolidinedione derivatives of formula (I) for the treatment and/or prevention of diabetes type I and/or II, impaired glucose tolerance, insulin resistance, hyperglycemia, obesity and polycystic ovary syndrome (PCOS). In particular, the present invention is related to the use of alkylidene pyrazolidinedione derivatives of formula (I) to modulate, notably to inhibit the activity of PTPs, in particular PTP1B, TC-PTP, SHP and GLEPP-1. The present invention is furthermore related to novel alkylidene pyrazolidinedione derivatives. (I) R1 and R2 represent independently from each other an unsubstituted or substituted aryl or heteroaryl.
1
Synthesis of Tetrahydrocarbazol-4-ones via Rh(III)-Catalyzed C–H Activation/Annulation of Arylhydrazines with Iodonium Ylides
作者:He Li、Haichun Gu、Ye Lu、Ning Xu、Narenchaoketu Han、Jiaqi Li、Jinghai Liu、Jinglin Liu
DOI:10.1021/acs.joc.2c00852
日期:2022.6.17
The rhodium(III)-catalyzed C–H activation followed by intramolecular annulation reactions between arylhydrazines and iodonium ylides under suitable conditions has been described. Tetrahydrocarbazol-4-ones are readily achieved with moderate to excellent yields. The synthetic protocol features a wide range of substrates with high functional group tolerance. The gram-scale reaction and derivatization