Bücher von Poonam Shetake-Chikode

Pyranochromen-2-ones are the class of chromen-2-ones which contain a pyran ring fused with that of chromen-2-one. Pyranochromen-2-ones and their analogues are a large class of compounds that have attracted the interest due to their biological activities and have shown few medical uses as pharmaceuticals, such as in the treatment of lymphedema. They also have ability to increase plasma antithrombin levels. The work has been a continuation of our work from the series of thirteen books as Pyrimidines, Quinazolines, Pyrimidines fused with heterocyclic rings, Novel Pyrazoles part I, Novel Pyrazoles part II ,Triazolo-Pyrimidines, Thiazolo-pyrimidines, Triazolo-Quinazolines, Triazines, Thiadiazines, Oxadiazines, Chromenes and Pyrano Pyrimidines. The present book entitled ¿Pyrano Chromenes: Significance and Strategies for synthesis¿ has a brief survey of the literature taken for Pyrano Chromenes, Introduction to Heterocyclic Organic Chemistry followed by DBN as catalyst. Chapter-4 describes application of malononitrile for the synthesis of pyrano[3,2-c]chromene-3-carbonitrile derivatives.

Pyrimidines fused with pyran ring are called pyranopyrimidines. The fusion is necessarily at the 4, 5 or 5, 6 carbon atoms from the pyrimidine ring. The pyranopyrimidine derivatives have immense importance in synthesis as well as in biological chemistry. Various pyrano pyrimidines are present in alkaloids, carbohydrates, polyether antibiotics and natural products. The pyrano pyrimidines possess several antimicrobial, antifungal and potent in-vitro antibacterial activities. The work has been a continuation of our work from the series of twelve books as Pyrimidines, Quinazolines, Pyrimidines fused with heterocyclic rings, Novel Pyrazoles part I, Novel Pyrazoles part II and Triazolo-Pyrimidines, Thiazolo-pyrimidines, Triazolo-Quinazolines, Triazines, Thiadiazines, Oxadiazines and Chromenes. The present book entitled ¿Pyrano Pyrimidines: Significance and Strategies for synthesis¿ has a brief survey of the literature taken for pyrano pyrimidines, microwaves in organic chemistry, synthetic applications of malononitriles and PSSA as catalyst. Chapter-5 describes Applications of malononitrile for the synthesis of pyrano[2,3-d] pyrimidine-6-carbonitrile derivatives.

Chromene or Benzopyran is an important class of organic compounds which have attracted much attention due to their pharmacological importance, such as use in thermoplastic resins, anticorrosive and antifertility treatment, estrogenic agents and in angina pectoris. The 2H-1-benzopyrans are considered to be antidepressant, antianexial, analgesic, antioxidant, hupoglycemic, antihypertensive, and antitumor agents. The work has been a continuation of our work from the series of eleven books as Pyrimidines, Quinazolines, Pyrimidines fused with heterocyclic rings, Novel Pyrazoles part I, Novel Pyrazoles part II and Triazolo-Pyrimidines, Thiazolo-Pyrimidines, Triazolo-Quinazolines, Triazines, Thiadiazines and Oxadiazines. The present book entitled ¿Chromenes: Significance and Strategies for synthesis¿ has a brief survey of the literature taken for Chromenes, Introduction to Nitriles followed by Synthetic applications of ethyl cyanoacetate and Ionic liquids as catalyst. Chapter 5 describes application of ethyl cyanoacetate for the synthesis of tetrahydro-4H-chromene-3-carboxylic acid ethyl ester derivatives.