[Object] To provide a substituted 
cycloalkene derivative having an action to suppress 
intracellular signal transduction or 
cell activation induced by endotoxin and to suppress 
cell responses due to the 
intracellular signal transduction and 
cell activation such as an excess generation of inflammatory mediators such as TNF-α, pharmacologically acceptable salts therefor, a medicament containing them as an 
active ingredient, a preparation method therefor, and a medicament containing the aforementioned substituted 
cycloalkene derivative as an 
active ingredient which is superior in prophylaxis and / or treatment of diseases such as 
sepsis (
septic shock, disseminated intravascular coagulation, multiple organ failure and the like), that are associated with 
intracellular signal transduction or 
cell activation induced by endotoxin and to cell responses to the 
intracellular signal transduction and 
cell activation.[Solution] A compound represented by the general formula (I):{whereinX and Y represent a group in which X and Y together with a 
carbon atom to which they are bound form ring A (the ring is 3- to 7-membered heterocyclyl ring or 3- to 7-membered cycloalkyl ring), each represents a 
hydrogen atom, or X and Y together represent a 
substituent of ring B.l and m, independently from each other, represent an integer of 0 to 3, and l+m is 1 to 3.R1 is an 
aliphatic hydrocarbon group and the like which may be substituted with a group selected from 
Substituent group β and 
Substituent group γ. n represents an integer of 0 to 3.R2 is a C1-C6 
alkyl group and the like which may be substituted with a group selected from a 
hydrogen atom and 
Substituent group β.R3 is a 
phenyl group, 5- to 6-membered heteroaryl group and the like which may be substituted with a group selected from Substituent group ε.R5 is a C1-C6 
alkyl group and the like which may be substituted with a group selected from a 
hydrogen atom and Substituent group β.Provided that in the case where R3 is a 
phenyl group which may be substituted with a group selected from Substituent group ε, X and Y represent a group in which X and Y together with a 
carbon atom to which they are bound form ring A, or X and Y together represent a 
substituent of ring B.