Accès ouvert
2025
article
OpenAlex
Yuichi Tanaka, Atsushi Masamune, Ryotaro Matsumoto, Tetsuya Takikawa et autres
OBJECTIVES: This study aimed to clarify the current clinico-epidemiological characteristics of acute pancreatitis (AP) in Japan. METHODS: We conducted a two-stage nationwide survey of patients with AP treated at selected hospitals in 2021, during the COVID-19 pandemic. The first stage estimated the …
jp
(code pays fourni par la source)
1984
article
OpenAlex
Yoshihiro Shigemasa, Yoshihiro Sasaki, Nasuo Ueda, Ruka Nakashima
Abstract Dihydroxyacetone (DHA) was obtained in good yield from the selective formose reaction which was conducted with 2-(dimethylamino)ethanol and vitamin B1 in N,N-dimethylformamide (DMF). The major products were isolated from the formose and identified as dihydroxyacetone and 2-(1,2-dihydroxyethyl)-5-(2-hydroxyethyl)-4-methylthiazole by spectral data. Vitamin …
jp
(code pays fourni par la source)
1983
article
OpenAlex
Yoshihiro Shigemasa, Hideki Matsumoto, Yoshihiro Sasaki, Nasuo Ueda et autres
The formose which was obtained from formaldehyde in the presence of base was a mixture of sugars and sugar alcohols containing over 30 components. The formose reaction has drawn much attention for 122 years from several standpoints; the chemical synthesis of edible …
jp
(code pays fourni par la source)