ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "...
The deviation from the chair conformation may be mainly attributed to the formation of a lactone ring and to the 1,3-diaxial steric strains between C(60) and 0(80). Thus, the C(60)...O(80) distance of 3.315 (4)A is c| ,.~i] I 0ta01 ,~01 io! 2 2 ~ ~... - ~ CITOl...
Crystals of the phenylurethane derivative of a novel bicyclic lactone, C 18 H 21 NO 8 , have an orthorhombic unit cell of dimensions a = 8.648(2), b = 11.041(7), c = 19.589(4) 脜, and belong to space group P 2 1 2 1 2 1 . The structure was solved by direct methods and ...
The crystal structureof poly-(7-heptalactone) (PHL) is presented.PHL has been synthesized by a combination of ring-opening polymerizationof eta-heptalactone and reversible addition-fragmentationchain transfer polymerization using diphenyl phosphate as catalyst.The noncommercial available eta-heptalactone mo...
摘要: From the pods of CADABA FRUCTICOSA L., a new dilactone designated as cadabalone, has been isolated. Based on reactions and spectral data, structure I has been assigned for cadabalone.关键词:Cadaba fructicosa Capparidaceae Cadabalone Dilactone ...
A chloroform extract of the seeds ofFerula penninervis Rgl et Schmahl has yielded a new sesquiterpene lactone of the guaiane type — fegolide: C20H28O5, mp 165–166°C [α]D −150°C (c 0.17; chloroform). This is a preview of subscription content, log in via an institution to chec...
X-ray structure determination of the naturally occurring isomer of cyanobacterin. J. Org. Chem. 51, 1615–1616 (1986). Article CAS Google Scholar Pignatello, J. J. et al. Structure of the antibiotic cyanobacterin, a chlorine-containing γ-lactone from the freshwater cyanobacterium Scytonema...
The utility of this methodology has been demonstrated in the stereoselective total synthesis of (-)-decarestrictine D from 1,3-propanediol and polyhydroxybutyrate (PHB) in 13 steps and 6.3% overall yield.关键词: decarestrictine D decanolide Nozaki-Hiyama-Kishi reaction lactone ...
Int. Cent. Chem. Biol. Sci., H. E. J. Res. Inst. Chem., Univ. Karachi, Karachi 75270, Pak.John Wiley & Sons, LtdChemInformFirdous S, Ansari NH, SWNg, Yousu S, Malik A, et al. (2012) Crystal Structure of a Novel Furo-Furan Lactone from Heliotropium eichwaldi. Zeitschrift fur ...
Formation and crystal structure of an exocyclic enol δ-lactone obtained from dimedone and trimethylsilylethynyl phenyliodonium triflatepyran derivativesChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ...