Hetero Diels−Alder Reactions of 1-Amino-3-siloxy-1,3-butadienes under Strictly Thermal Conditions
作者:Yong Huang、Viresh H. Rawal
DOI:10.1021/ol006404d
日期:2000.10.1
The hetero Diels-Alderreaction of 1-amino-3-siloxy-1,3-butadiene (1a) with a range of unactivated aldehydes proceeds readily under remarkably mild conditions: at room temperature and in the absence of Lewis acid catalysts. The cycloadducts are formed in good yields and can be converted directly to the corresponding dihydro-4-pyrones using acetyl chloride. Ketones and imines are also reactive in hetero
Hetero-Diels–Alder reactions of ketones: a high-yielding synthesis of 2,2-disubstituted 2,3-dihydropyran-4-ones
作者:Philip C. Bulman Page、P. Howard Williams、Eric W. Collington、Harry Finch
DOI:10.1039/c39870000756
日期:——
2,2-Disubstituted2,3-dihydropyran-4-ones may be prepared in high yields by the Lewis acid-catalysed hetero-Diels–Alderreactions of electron-rich dienes with ketones bearing strongly electron-withdrawing substituents.
TRIAZOLE BETA CARBOLINE DERIVATIVES AS ANTI-DIABETIC AGENTS
申请人:Guo Liangqin
公开号:US20110201615A1
公开(公告)日:2011-08-18
Beta-carboline derivatives of structural formula (I) are selective antagonists of the somatostatin subtype receptor 3 (SSTR3) and are useful for the treatment of Type 2 diabetes mellitus and of conditions that are often associated with this disease, including hyperglycemia, insulin resistance, obesity, lipid disorders, and hypertension. The compounds are also useful for the treatment of depression and anxiety.
PAGE P. C. B.; WILLIAMS P. H.; COLLINGTON E. W.; FINCH H., J. CHEM. SOC. CHEM. COMMUN.,(1987) N 10, 756-757
作者:PAGE P. C. B.、 WILLIAMS P. H.、 COLLINGTON E. W.、 FINCH H.
DOI:——
日期:——
Asymmetric hetero‐Diels‐Alder Reaction of
<i>trans</i>
‐1‐Methoxy‐3‐trimethylsilyloxy‐buta‐1,3‐diene Catalyzed by Zinc Complexes
作者:Matylda Stefaniak、Szymon Buda、Jacek Mlynarski
DOI:10.1002/ejoc.202000822
日期:2020.9.7
Catalyticasymmetric hetero‐Diels‐Alder (hDA) reaction of Danishefsky diene with α‐carbonyl esters have been performed with a zinc‐based catalyst that is readily available from zinc triflate and bisoxazoline ligands.