An-Antioxidant Organie Compound Isolated from the Stem of Hypericum calycinum L. (Pyin-nyar-lin-kar)

We would like to express our sincere gratitude to Professor Shmuel Bittner, Bengurion University of the Negev, Israel and Associate Professor Dr. Y. Takaya, Mejio University, Japan, for their invaluable suggestions, encouragement, and comments. We are especially thankful to the German Academic Exchange Service (DAAD) for granting a permission to undertake a part of this research work. Finally we wish to convey our sincere acknowledgements to Rector Dr. Mya Aye and Pro-rector Dr. Khin Swe Myint for their kind permission to publish this paper.