Detail of "15877-57-3"

Reference

A convenient synthesis of aldehydes from 1,2-dimethoxyethenyllithium and trialkylboranes

A convenient synthesis of aldehydes from 1,2-dimethoxyethenyllithium and trialkylboranes. Koshino, Junji; Sugawara, Takahiro; Yogo, Toshinobu; Suzuki, Akira (Fac. Eng., Hokkaido Univ., Sapporo 060, Japan). Synth. Commun.There are some reagents with their cas registry numbers 75144-28-4 and 15877-57-3 are used in this study., 13(13), 1149-52 (English) 1983. CODEN: SYNCAV. ISSN: 0039-7911. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) The vinyllithium compd., [MeOCH:C(OMe)-]Li+ [prepd. from MeOCH:C(OMe)Br and BuLi], was treated with R3B (R = alkyl, cyclopentyl) and BF3×Et2O to yield RCH2CHO. Thus, MeOCH:C(OMe)Br was treated with BuLi at -78°, trihexylborane was added at -78°, BF3×Et2O was introduced at 0°, and the mixt. was stirred at room temp. and worked up to give 83% octanal. .

Synthesis of sphingosine relatives

Synthesis of sphingosine relatives. Part 19.In this study，187100-35-2 is also used. Synthesis of penaresidin A and B, azetidine alkaloids with actomyosin ATPase-activating properties. Takikawa, Hirosato; Maeda, Takeshi; Seki, Masanori; Koshino, Hiroyuki; Mori, Kenji (Dep. Chem., Sci. Univ. Tokyo, Tokyo 162, Japan). Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry, (2), 97-111 (English) 1997 Royal Society of Chemistry. CODEN: JCPRB4. ISSN: 0300-922X. DOCUMENT TYPE: Journal CA Section: 31 (Alkaloids) Three stereoisomers of penaresidin A and two stereoisomers of penaresidin B, azetidine alkaloids isolated from the Okinawan marine sponge Penares sp., have been synthesized. As a result, the correct side chain structure of penaresidin B has been shown to be 11-hydroxy-13-methyltetradecyl, not 10-hydroxy-12-methyltetradecyl. Natural penaresidin A is either (15S)- or (15R)-I and natural penaresidin B is either (15S)- or (15R)-II. .