Two New Lobane Derivatives from the Soft Coral Lobophytum pauciflorum of the Havelock Island of the Indian Ocean. --(ANJANEYULU, A. S. R.; RAO, G. V.; RAJU, K. V. S.; MURTHY, M. V. R. K.; Indian J.

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 “References” option.

No abstract

Five new and uncommon aromatic derivatives and the red pigment caulerpin have been reported from the CHClj extract of Caulerpa racemosa. The structures of the new derivatives have been elucidated as 1,5-diphenyl-1,4-pentadiene [1], /r»«r-cinnamyl-1-phenyl-2-propenyl ether [2], dicinnamyl ether [31, cinnamyl-3-phenyl-1-propenyl ether [4], and cinnamyl dihydrocinnamate [5] on the basis of their analytical and spectral data. The presence of such compounds is unusual in marine algal species, although similar propane dimers are widespread in terrestrial plants.

The paper proposes an efficient M-commerce digital cash framework in which customers can get digital cash from any bank and vendors can encash digital cash at any bank. Thus, the system provides flexible and anonymous digital cash. The proposed scheme has the following features: (i) Realizes practically feasible anonymous digital cash by using group signatures; (ii) Achieves fairness in goods exchanged between customers and vendors by using trusted, tamper-resistant hardware; (iii) Installs e-wallet as a secure Java smart card applet making it practical for ease of implementation and security; (iv) Does not require an on-line trusted third party (TTP); (v) Allows dispute resolution when necessary. The paper describes the protocol and the underlying framework, and analyzes protocol in terms of security and feasibility.