I have 20 years of experience, and specialize in the field of synthetic chemistry with specific knowledge in the areas of reaction development, structure determination and total synthesis. I have published on such topics as enantioselective synthesis, natural product synthesis and structure assignment. My group was the first one to prepare the mirror image of cholesterol and to use it to probe the activity of a biological system. This strategy of using mirror images to probe biological systems has been used by many other researchers since that time.