20 items. (October 20, 2015) 10:59 pm HADOOR, 09 May 2016, 17:37
. Season 01 Episode 01.
.New naphthalenes from Lycoris aurea and identification of its metabolite.
Two new naphthalenes, 2-formyl-2H-naphtho-[1,2-b]pyran-3-ol, 5-O-β-D-glucopyranoside (1) and 7-formyl-2H-naphtho-[1,2-b]pyran-3-ol, 5-O-β-D-glucopyranoside (2), along with 13 known compounds were isolated from the whole plant of Lycoris aurea. The structures of these compounds were determined on the basis of NMR and MS spectral data. Additionally, two metabolites of compound 1 were also identified. (Z)-7-Formyl-2-formylchromone (M1) and 7-formyl-2H-naphtho-[1,2-b]pyran-3-ol (M2). M1 was formed from the hydrolysis of 1 in the presence of O-acetylglucose (OAG) in the enzymatic system. M2 was generated in the rat liver microsome incubation of 1.The present invention relates to a semiconductor memory device, and more particularly, to a technology effectively applicable to a semiconductor memory device including a memory cell array composed of dynamic random access memory (DRAM) cells.
A semiconductor memory device such as a DRAM includes a memory cell array formed of memory cells each configured by one transistor and one capacitor. The number of the transistors formed on a chip is enormous, and each of these transistors includes numerous (e.g., thousands) of elements. Thus, for preventing the reduction in the operational speed of the entire semiconductor memory device, it is necessary to address the relationship between the number of elements in a single transistor and the number of elements in a single memory cell. In the following description, the number of elements in a single memory cell is referred to as “the number of elements in the memory cell”.
The number of elements of a memory cell MC is basically fixed. However, one of important factors affecting the operational speed of a semiconductor memory device is a resistance value of a be359ba680
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