Studies on the Allelopathic or Pheromonal Lipids on the Body-Surface of Organisms.

山下：研究了山羊、绵羊、日本长羚和日本鹿皮脂的脂类成分。确定了特定组分的绝对构型如下：R为4-乙基脂肪酸（山羊），R为4-甲基脂肪酸（绵羊），R为2-羟基脂肪酸（鹿）; Izaki：用各种微生物的培养液寻找脂类生物合成的特异性抑制剂，特别是革兰氏阴性菌包膜的抑制剂。还研究了革兰氏阴性厌氧菌脂肪酸合成的特异性抑制剂硫乳霉素的作用方式; Yasumoto：对四种水华形成微藻中的鱼毒性和溶血性物质进行了结构测定，并对高度不饱和脂肪酸进行了分析。（C_<18：5 W3>，C_<22：6 W3>）和几种糖基甘油酯，以及一种新的相关化合物; Ohrui：特别是氘代糖的NMR研究，使人们有可能分析唾液酸和KDO和（2-6）-键的唾液酸化低聚糖在溶液中的优选构象。分子内氢键发挥重要作用的首选构象，这些昆虫;松田：6个叶甲物种的寄主植物叶面，正烷烃，正醇，正链烷酸的常见蜡成分的摄食反应进行了研究。四出六种具有不同的寄主范围的刺激，这些蜡成分的饲料。正构烷烃C_<21>-C_<25>和C_<30>-C_<33>对米氏圆蚧有刺激作用;正构醇C_<22>-C__<24>对金囊藻有刺激作用;正构烷烃C_<31>-C__<35>和正构酸C_<24>-C_<26>对条颈小萤叶甲有刺激作用;正构烷烃C_<27>-C_对Humeralis有刺激作用<31>。

Yamashita : Lipid components of sebum of goat, sheep, Japanese serow and Japanese deer were investigated. The absolute configurations of specific components were determined as follows : R for 4-ethyl-fatty acids (goat), R for 4-methyl-fatty acids (sheep) and R for for 2-hydroxy-fatty acids (deer) ; Izaki : Specific inhibitors of lipid biosynthesis, especially those of gram-negative bacterial envelopes, were searched with the culture fluids of verious microorganisms. Mode of action of thiolactomycin, a specific inhibitor of fatty acid synthesis of gram-negative anaerobic bacteria, was also investigated ; Yasumoto : Structural determination of ichthyotoxic and hemolytic substances in four bloom forming microalgae was carried out and highly unsaturated fatty acids (C_<18 : 5W3>, C_<22 : 6W3>) and several glycosyl glycerides in addition to a new related compounds were identified ; Ohrui : The NMR studies with specifically deuterated sugars have made it possible to analyze the preferred conformations of sialic acid and KDO and (2-6) -linkages of sialilated oligosaccarides in solution. The intramolecular hydrogen bonds play impotant roles for the preferred conformations of these saccharides ; Matsuda : Feeding response by six leaf beetle species to common wax components of host plant leaf surface, n-alkanes, n-alcohols, and n-alkanoic acids were investigated. Four out of six species which have different host ranges were stimulated to feed by these wax components. Atrachya menestriesi was stimulated by n-alkanes C_<21>-C_<25> and C_<30>-C_<33> ; Chrysolina auricalcea by n-alcohols C_<22>-C_<24> ; Galerucella vittaticollis by n-alkanes C_<31>-C_<35> and n-acids C_<24>-C_<26> ; Pyrrhalta humeralis by n-alkanes C_<27>-C_<31>.