Potential bis-alkylating agents for cancer chemotherapy. Approaches to the synthesis of 2-sulfonyl-1,4-bis(dimethanesulfonoxy)butanes
摘要:
Three general methods for the synthesis of derivatives of the bis-alkylating agent, myleran [1,4-bis(methane-sulfonoxy)butane (1)], are presented. These derivatives contain a lipophilic group attached to the 2 position of 1,4-bis(methanesulfonoxy)butane by means of a sulfonyl function. As examples of the scope of the methods, the synthesis of seven such derivatives (12a-g) is presented. All seven were inactive against L1210 and P388 leukemia in the mouse.
Regioselective hydroxysulphenylation of derivatives of allylicalcohols and amines
作者:Zakaria K M Abd El Samii、Mohamed I Al Ashmawy、John M Mellor
DOI:10.1016/s0040-4039(00)85193-x
日期:1986.1
Reaction of manganic acetate with diphenyidisulplilde in dichloromethane-trifluoroacetic acid in the presence of allylic esters or amides of allylamine gives trifluoroacetoxysulphides and hence by ready hydrolysis vicinal hydroxysulphides. The regiochemical outcome can be controlled by selection of either an acetyl- or trifluoroacetyl derivative.
Asymmetric 1,4-additions to 5-alkoxy-2(5h)-furanones
作者:Ben L. Feringa、Ben De Lange
DOI:10.1016/s0040-4020(01)86092-0
日期:1988.1
The synthesis of enantiomerically pure 5-menthyloxy-2(5H)-furanones is described as well as the diastereoselective 1,4-addition of thiols to these butenolides to yield new homochiral C4-synthons. Kineticresolution of 5-methoxy-2(5H)-furanone, with an enantiomeric excess of 13%, was achieved by cinchonidine catalyzed thiophenol addition.