Organic Chemistry

because the resulting radical is resonance stabilized by both double bonds. This radical reacts with forming a peroxy radical wi ...

phosphatidylserine 008 CHAPTER 26 Lipids 26.4 Membranes For biological systems to operate, some parts of organisms must be separ ...

Section 26.4 Membranes 009 polar head CH 2 OR^1 R^2 C O = CHO C nonpolar fatty acid chains O O− CH 2 O P O O(CH 2 ) 2 NH 3 + cho ...

PROBLEM 8 a. Draw the structures of three different sphingomyelins. b. Draw the structure of a galactocerebroside. PROBLEM 9 The ...

Ulf Svante von Euler (1905–1983) first identified prostaglandins—from semen—in the early 1930s. He named them for their source, ...

012 CHAPTER 26 Lipids stabilized by electron delocalization. The radical reacts with oxygen to form a peroxy radical. Notice tha ...

Section 26.5 Prostaglandins 013 the aggregation of platelets. The levels of these two compounds must be carefully con- trolled t ...

Leopold Stephen Ru i ka (1887–1976)was the first to recognize that many organic compounds contain multiples of five carbons. A C ...

Section 26.6 Terpenes 015 In the case of cyclic compounds, the linkage of the head of one isoprene unit to the tail of another i ...

agent used in margarine. and other colored compounds are found in the leaves of trees, but their characteristic colors are usual ...

Section 26.8 Biosynthesis of Terpenes 017 absorbs visible light, it isomerizes to the trans isomer. This change in molecular geo ...

018 CHAPTER 26 Lipids The mechanism for converting mevalonic acid into mevalonyl phosphate is essen- tially an reaction with an ...

Section 26.8 Biosynthesis of Terpenes 019 PROBLEM 14 SOLVED Give the mechanism for the last step in the biosynthesis of isopente ...

020 CHAPTER 26 Lipids Terpene Biosynthesis The reaction of dimethylallyl pyrophosphate with isopentenyl pyrophosphate forms gera ...

Section 26.8 Biosynthesis of Terpenes 021 PROBLEM 16 Propose a mechanism for the conversion of the Eisomer of geranyl pyrophosph ...

Farnesyl pyrophosphate can react with another molecule of isopentenyl pyrophos- phate to form geranylgeranyl pyrophosphate, a 20 ...

Section 26.9 Steroids 023 26.9 Steroids Hormonesare chemical messengers—organic compounds synthesized in glands and delivered by ...

024 CHAPTER 26 Lipids Two German chemists,Heinrich Otto Wieland (1877–1957)and Adolf Windaus (1876–1959), each received a Nobel ...

Section 26.9 Steroids 025 Adolf Friedrich Johann Butenandt (1903–1995)was born in Germany. He shared the 1939 Nobel Prize in che ...

026 CHAPTER 26 Lipids CHOLESTEROL AND HEART DISEASE Cholesterol is probably the best-known lipid be- cause of the correlation be ...