河北医科大学药学院 丹参素 医大网页一组织机构一药学院一天然药物 0 ●河业区锋大子 HO OH OH htp:202.206.48213:8091/ 河北科大学天然药物化学教研室？ Structure Elucidation How many methods(means)? Advantages and Limitation of every method? What is the procedure? hp:202.206.48.213:3097 Structure Determination What is the most complex structure ever you have solved? What is the most challenging problem eve solved in the field of structure elucidation? 天然药物化学室史清文教授河北医科大学药学院 天然药物化学室史清文教授 5 4 7 2 3 5 6 8 9 1 OH O OH HO OH C9H10O5 Exact Mass: 198.05 丹参素 25 26 医大网页—组织机构—药学院—天然药物 http://202.206.48.213:8091/ http://202.206.48.213:8091/ 27 28 Structure Elucidation How many methods (means)? Advantages and Limitation of every method? What is the procedure? 29 Structure Determination What is the most complex structure ever you have solved? What is the most challenging problem ever solved in the field of structure elucidation? Current MS, NMR, and X-ray diffraction are presented as structure elucidation tools for analytical chemistry of natural products