Division of property among brothers

There are 2 unmarried brothers. Both had a common business by which they generated capital. The elder brother then married and purchased several properties in the name of his wife (registered). After few years both brothers separated and younger brother asked for his share of property (as properties is purchased by the common fund/capital of the business). The elder brother now refusing to share any property to the younger one. After few years the elder brother told to give around 40% but the wife of the elder brother refuses to give any share to younger brother as well as not to her husband (elder brother). Now both the brothers have almost nothing. Now she sold the property to the third party. Younger brother didn't get any share from the selling price as well. (Both the brothers have 2 male children) 1.Now What should Younger brother do to get his lifelong earnings? 2. What should elder brother can do to get the common property from his wife? 3. Is there is a way that both brothers can now come together and can fight against the elder brother's wife?