Download Terpenoids and Steroids: Volume 7 (SPR Terpenoids and by James R Hanson PDF
By James R Hanson
Expert Periodical experiences supply systematic and specified overview assurance of development within the significant parts of chemical examine. Written via specialists of their expert fields the sequence creates a different provider for the energetic examine chemist, offering commonplace severe in-depth money owed of development specifically components of chemistry.
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Monoterpetzoids 41 Nitrosolysis of camphor ethyl acetal with ethanolic ethyl nitrite in sulphur dioxide yields the orthoester oxime (205) which is rapidly dehydrated by excess acetal to the orthoester nitrile which then reacts with sulphur dioxide to form the ester nitrile and diethyl s ~ l p h i t e Further . ~ ~ ~ papers in this section include the full paper on ozonolysis of silyl ethers (Vol. 5 , p. 33),354another synthesis of camphor-en01 trimethylsilyl ether (cf. Vol. 6, p. 41),400the conversion of camphor oxime with Grignard reagents of (206) into the corresponding imine with no aziridine f ~ r r n a t i o n ,the ~ ~ preparation ' by treating bornylene with trichloroacetyl isocyanate,402the oxidation of thiocamphor to the S-oxide and alkylation in the presence of thallium(1) ethoxide to cup -unsaturated s u l p h ~ x i d e s , ~and " ~ the free-radical C-3 alkylation of camphor with a1kenes.
S. Meeting, San Francisco, August 1976, Abstract ORGN, No. 82. J. S. Mynderse, D. J. Faulkner, J. Finer, and J. C. Clardy, Tetrahedron Letters, 1975, 2175; J. S. Abs. Internat. ( B ) , 1975, 36, 2567. -In the yomogi alcohol synthesis (Vol. 6, p. 21, Scheme 7) another reagent, CuC1,-CuO-EtOH, 25"C, after reagent i, was omitted. r. c. 212 The X-ray analysis of (+ )-trans-chrysanthemic acid-pbrornoanilide derivative has been carried Further work on the chrysanthemyl model for squalene biogenesis from Poulter's group has been published (cf.
I. -L. Lee, J. Amer. Chem. ,1975,97,6906. Y. Takeda and H. Inouye, Chem. and Pharm. Bull. (Japan), 1 9 7 6 , 2 4 , 7 9 . G. Ferguson and W. C. S. Perkin 11, 1975,1124; theX-ray analysisis, however, listed in Vol. 5, p. 206. Th. Sevenet, A. -P. Husson, Phytochemistry, 1976,15, 576; J. P. Foucher, A. -P. Husson, Th. Sevenet, C. -P. Vidal, 10th International Symposium on the Chemistry of Natural Products, Dunedin, New Zealand, 1976, Abstract, E10. N. G. Bisset and A. K. Choudhury, Phytochemistry, 1974,13, 265 (omitted from previous Reports).