Searching Ejournals, use drop down menu to choose "title contains all words." If you type in "medicinal chemistry," several records come up, including links for ACS Medicinal Chemistry Letters and Journal of Medicinal Chemistry.
You can also try "pharmaceutical chemistry," which brings up two journals (International Journal of Chemistry and Pharmaceutical Sciences & Pharmaceutical Chemistry Journal) and an Ebook (Green Chemistry in the Pharmaceutical Industry, which is available through Ebrary).
Using the example of diabetes type 2 and the new drug Omarigliptin (MK-3102), you might try a search like this:
diabetes AND "type 2" AND omarigliptin
Knowing the different names for a disease is useful (many times, there's the lay person's term and the scientific term) and also, as in this case, evolving names of diseases. Type 2 diabetes was once known as adult-onset or noninsulin-dependent diabetes.
Looking in the Health and Wellness database, under diseases and conditions, I can discover more established drugs for treatment, including metformin or acarbose or xenatide or troglitizone. You will find many more research articles on these drugs, as these have been in use for a longer time than omarigliptin..