Syntheses of sulfoxide derivatives in the benzodiazine series. Diazines. Part 37
作者:Nicolas Le Fur、Ljubica Mojovic、Alain Turck、Nelly Plé、Guy Quéguiner、Vincent Reboul、Stéphane Perrio、Patrick Metzner
DOI:10.1016/j.tet.2004.05.059
日期:2004.8
Syntheses of new sulfinylcinnolines, quinoxalines, quinazolines and phtalazines have been investigated starting from the appropriate halogenobenzodiazine derivatives. The latter were converted in one step to the corresponding sulfanyl benzodiazines which upon oxidation with m-CPBA led to the corresponding sulfoxide derivatives of benzodiazines in moderate to good yields. In parallel to this study,
Photocycloaddition of Quinoxaline-2(1H)-thiones to Alkenes
作者:Takehiko Nishio
DOI:10.1002/hlca.19920750208
日期:1992.3.18
addition of quinoxaline-2(1H)-thiones to alkenes is described. Irradiation of the quinoxaline-2(1H)-thiones 1–4 in the presence of the alkenes 7 gave the 2-(2′-mercaptoalkyl)quinoxalines 8–11 in moderate-to-good yields via ring cleavage of an intermediate aminothietane with aromatization of the quinoxaline ring. The latter was formed by [2+2] photocycloaddition of the CS bond of the quinoxaline-2(1H)-thione
[EN] ANTI-NEOPLASTIC COMPOUNDS, COMPOSITIONS AND METHODS<br/>[FR] COMPOSÉS ANTINÉOPLASIQUES, COMPOSITIONS ET PROCÉDÉS
申请人:PROGENRA INC
公开号:WO2010114881A1
公开(公告)日:2010-10-07
Disclosed are novel compounds which are useful as therapeutics, especially in anti-neoplastic therapy and in other therapeutic regimes where cysteine protease inhibition is implicated.
Quinoxalines. XXVI. Reactions of 2-quinoxalinyl thiocyanate with nucleophiles.
作者:Chihoko IIJIMA、Tomiko KYO
DOI:10.1248/cpb.37.618
日期:——
2-Quinoxalinyl thiocyanate (1) possesses four electrophilic sites, i.e., 2-position, 3-position, sulfur and cyano carbon, to receive nucleophilic attack.Grignard reagents attacked preferentially the sulfur atom to give sulfides (8-12).These sulfides were readily oxidazed to sulfoxides (13-17) with sodium bromite in acetic acid.Hydroxide and ethoxide ions were found to attack preferably the cyano carbon to give thiol (2), while amines (butylamine, piperidine and morpholine) and ethyl cyanoacetate carbanion attacked the carbon at the 2-position to afford the corresponding ipso-substitution products (4-7).