Dilip Shanghvi, the founder of India’s largest domestic pharmaceutical company, Sun Pharmaceutical Industries, will buy a 23% stake in debt-ridden Suzlon Energy for Rs 1,800 crore. Suzlon promoter, Tulsi Tanti’s family will hold 24% stake and retain management control. The consideration is for 100 crore new shares in Suzlon Energy to be issued by a preferential allotment.