Melanocortin-4 receptor binding compounds and methods of use thereof
申请人:Millennium Pharmaceuticals, Inc.
公开号:US20040082779A1
公开(公告)日:2004-04-29
Provided are MC4-R binding compounds of the formula XVII:
1
wherein L
2
is a linker group, and P
1
, P
2
, P
3
, P
4
, Z
1
, Z
2
, Z
3
, Z
4
, Z
5
, t, s, and R are as described in the specification. Methods of using the compounds to treat MC4-R associated disorders, such as disorders associated with weight loss, are also provided.
Lewis Base Catalyzed, Sulfenium Ion Initiated Enantioselective, Spiroketalization Cascade
作者:Kimberly M. Hilby、Scott E. Denmark
DOI:10.1021/acs.joc.1c02271
日期:2021.11.5
A Lewisbasecatalyzed, enantioselective sulfenocyclization of alkenes to afford [6,6]spiroketals has been developed. The method uses a chiralLewisbase catalyst with an electrophilic sulfur source to generate enantioenriched thiiranium ion with alkenes. Upon formation, the thiiranium ion is subsequently captured in a cascade-type reaction, wherein a ketone oxygen serves as the nucleophile to open
Enantioselective Copper-Catalyzed Intramolecular Phenolic OH Bond Insertion: Synthesis of Chiral 2-Carboxy Dihydrobenzofurans, Dihydrobenzopyrans, and Tetrahydrobenzooxepines
Efficient: A copper‐catalyzed enantioselective intramolecular insertion of carbenoids into phenolic OHbonds has been developed. This method can be used for the synthesis of the title compounds in high yields and excellent enantioselectivities under mild and neutral conditions (see scheme). NaBArF=sodium tetrakis[3,5‐bis(trifluoromethyl)phenyl]borate.
有效:一个铜催化卡宾成酚类的O对映选择性分子内插入 H键已经研制成功。该方法可用于在温和和中性条件下以高收率和出色的对映选择性合成标题化合物(参见方案)。NaBAr F =四[3,5-双(三氟甲基)苯基]硼酸钠。
Mild and Rapid Method for the Generation of <i>ortho</i>-(Naphtho)quinone Methide Intermediates
作者:Abdul kadar Shaikh、Alexander J. A. Cobb、George Varvounis