23525-90-8Relevant academic research and scientific papers
Photoinduced Vitamin B12-Catalysis for Deprotection of (Allyloxy)arenes
Giedyk, Maciej,Turkowska, Joanna,Lepak, Sandra,Marculewicz, Marcin,ó Proinsias, Keith,Gryko, Dorota
supporting information, p. 2670 - 2673 (2017/05/24)
Vitamin B12 is a natural cobalt complex that, while reduced to the "supernucleophilic" Co(I) form, can easily react with electrophiles via an SN2 mechanism. It is also shown to react via an SN2′ mechanism with allylic compounds allowing for photochemical deprotection of (allyloxy)arenes. A sustainable alternative to commonly used noble metal-catalyzed deprotection reactions is presented.
INTERMEDIATE COMPOUND WHICH IS USED FOR THE PREPARATION OF PIOGLITAZONE
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Paragraph 0068, (2008/06/13)
The present invention relates to a novel compound of formula (IV) which is an intermediate that can be used for the preparation of pioglitazone. It also relates to a method of obtaining the novel compound (IV) starting from the natural product L-tyrosine, in which the amino group is protected in the form of aromatic imino group, and a method of obtaining pioglitazone from the said intermediate.
ANTI-ODOR COMPOSITIONS AND THERAPEUTIC USE
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, (2008/06/13)
This application discloses a composition comprising a malodor compound and an anti-odor ingredient effective for reducing the presence or production of malodor. The composition may be topically applied to a subject and is useful for cosmetic conditions, pharmaceutical indications, or other objectives.
A mild, highly selective and remarkably easy procedure for deprotection of aromatic acetates using ammonium acetate as a neutral catalyst in aqueous medium
Ramesh,Mahender,Ravindranath,Das, Biswanath
, p. 1049 - 1054 (2007/10/03)
Ammonium acetate was found to catalyze efficiently the selective deprotection of aromatic acetates in the presence of various sensitive functionalities in aqueous methanol under neutral conditions at room temperature to yield the corresponding phenols in excellent yields. The method has been utilized for deprotection of acetates of several naturally occurring bioactive phenolic compounds and for preparation of venkatasin, a natural coumarino-lignan, from the anticancer compound cleomiscosin A.
N-METHOXYDIACETAMIDE: A NEW SELECTIVE ACETYLATING AGENT
Kikugawa, Yasuo,Mitsui, Kimiyo,Sakamoto, Takeshi,Kawase, Masami,Tamiya, Hiroshi
, p. 243 - 246 (2007/10/02)
A simple and efficient method for the direct chemoselective acetylation of primary amines in the presence of alcohols or secondary amines using a new reagent N-methoxydiacetamide is described.
Octapeptides and methods for their production
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, (2008/06/13)
New octapeptides having the formula Prot Grp-R-Trp-Ser-Tyr-R2 -Leu-Arg-Pro-R3 ; salts thereof; wherein R is Gln, Gln (bzl), His (bzl), Ser (bzl), Pro, Leu, Tyr (bzl), Ile, Cys (bzl) or Phe, R2 is D-Phe, D-Ala, D-Leu, D-Trp, D-Tyr, D-Tyr (Me), D-Ser, D-Met, D-Arg, D-Val, D-His, D-Gln, D-Phs, D-Thr, D-Pro, D-Me5 Phe or D-Asn and R3 is NH2, NH(lower alkyl), N-(lower alkyl)2, NH-benzyl, NHCH2 CH2 N-(lower alkyl)2 or NH-CH2 CH2 SO2 NH-benzyl; methods for their production; certain peptide intermediates and their salts used in the production thereof; and the use of said octapeptides as luteinizing hormone releasing factor antagonists.
