Throughout the ages, humans have relied on nature for their basic needs in terms of shelter, clothing, food, flavors and fragrances as not the least, medicines. In accordance with the recent interest in plant derived drugs and when taking into consideration that many of these drugs might be of phenolic, terpenoidal or alkaloidal nature, it becomes therefore a necessity to subject extracts of some promising medicinal plants to accurate and comprehensive bioassay guided chemical investigations. As a result of this intensive study, eleven phenolic compounds were individually isolated and...