Synthesis of Spirocyclic β‐ and γ‐Sultams by One‐Pot Reductive Cyclization of Cyanoalkylsulfonyl Fluorides
作者:Kateryna O. Stepannikova、Bohdan V. Vashchenko、Oleksandr O. Grygorenko、Marian V. Gorichko、Artem Yu. Cherepakha、Yurii S. Moroz、Yulian M. Volovenko、Serhii Zhersh
DOI:10.1002/ejoc.202000351
日期:2021.12.21
A multigram synthesis of spirocyclic γ‐ and β‐sultams is reported, which are advanced building blocks for organic synthesis and drug discovery. The synthesis proceeds through a one‐pot reductivecyclization of cyclic cyano sulfonyl fluorides.
Oral hypoglycemic agents. Pyrimido[1,2-a]indoles and related compounds
作者:Ian A. Cliffe、Eric L. Lien、Howard L. Mansell、Kurt E. Steiner、Richard S. Todd、Alan C. White、Robin M. Black
DOI:10.1021/jm00085a001
日期:1992.4
for their hypoglycemic activity following oral administration at a standard dose of 100 mg/kg to fed rats. The effect of 10-alkoxyalkyl, 10-alkyl, 10-aryl, and 3,3-dialkyl substitution on the activity of 10-hydroxypyrimido[1,2-a]indoles was investigated. Relative potencies of a number of the most active compounds were defined by three-point dose-response studies. The most potent compounds were those
Novel 3-halo-2,2-disubstituted propanenitriles of formula ##STR1## wherein Z represents bromo or chloro and A, together with the carbon atom to which it is attached, represents a 5,6 or 7 membered saturated carbocyclic or heterocyclic ring, are useful as intermediates for preparing substituted pyrimido[1,2-a]indoles. The intermediates can be prepared by a novel process which comprises condensing a 2,2-disubstituted ethanenitrile with a dihalomethane in the presence of a non-nucleophilic strong base.
Pyridoindoles of formula (I)
and their pharmaceutically acceptable acid addition salts, wherein R represents lower alkyl a mono- or bi-cyclic aryl radical or a group of formula R³O-B-[where R³O is (lower)alkoxy,aryl(lower)alkoxy or hydroxy and B is a lower alkylene chain optionally containing one double or triple bond], R¹ and R² which may be the same or different each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, halo(lower)alkyl, halogen, amino or mono- or di(lower) alkylamino and A, together with the carbon atom to which it is attached, represents 5, 6 or 7 membered saturated carbocyclic or heterocyclic ring,are useful as hypoglycaemics.
式 (I) 的吡啶吲哚及其药学上可接受的酸加成盐,其中 R 代表低级烷基、单环或双环芳基或式 R³O-B-[where R³O is (lower)alkoxy,aryl(lower)alkoxy or hydroxy and B is a lower alkylene chain optionally containing one double or triple bond]的基团、 R¹和R²可以相同或不同,各自代表氢、羟基、低级烷基、低级烷氧基、卤代(低级)烷基、卤素、氨基或单或二(低级)烷基氨基,而A与所连接的碳原子一起代表5、6或7个成员的饱和碳环或杂环,可用作降血糖药。
CLIFFE, IAN A.;TODD, RICHARD S.;WHITE, ALAN C., SYNTH. COMMUN., 20,(1990) N2, C. 1757-1767