The book Chemistry of Natural Products has been written to meet the requirements of graduate students of all Indian Universities. We have been selected sufficient theory covered the syllabus from Universities examination papers. We have tried to our best to keep the book free from the misprint. The author shall be grateful to the readers who point out errors and omissions which inspite of all care might have been there. I have spared no pains in applying my long experience of degree class? teaching to make the book useful to the students.