Is it possible to make sealed overridden MonoBehaviour method.

I wan't to create a base class for my component and want to prevent all class which derive from it override OnMouseClick and so on methods.

I expect something like this

 using UnityEngine;
 using System.Collections;
 
 public delegate void OnEnter(BaseClass baseClass);
 
 public class BaseClass : MonoBehaviour {
     public static OnEnter onEnter;
     
     public sealed override void OnMouseEnter(){
         if (onEnter != null)
             onEnter(this);
         OnMouseEnterWork();
     }
 
     public virtual void OnMouseEnterWork ()
     {
         
     }
 }