Diastereodifferentiating photocyclodimerization of 2-anthracenecarboxylates tethered to a cyclic tetrasaccharide scaffold: critical control of photoreactivity and stereoselectivity.

From a complex mixture of mono- and di-2-anthracenecarboxylic acid (AC) esters of cyclic nigerosylnigerose (CNN), two monoesters (2(B) and 6(A)) and four diesters in which AC was introduced on the transannular B/D (2(B)2(D)), adjacent A/B and A/D (6(A)2(B) and 6(A)2(D)), and same B/B (2(B)3(B)) nigerose rings were isolated. Possessing two ACs at distant positions, 2(B)2(D) and 6(A)2(D) showed negative Cotton effects for the (1)Bb band, the intensities of which were stronger than that of 6(A). 2(B)2(D) and 6(A)2(D) slowly photocyclodimerized to give HH dimers 3* and 4 with 57% and 81% HH selectivity, respectively, which were appreciably higher than that for 6(A) (34%), while the enantiomeric excesses (ee's) of anti-HH dimer 3* were 2% and -18%, respectively.

[A case of advanced gastric cancer with esophageal invasion treated by neoadjuvant S-1/CDDP chemotherapy].

A 75-year-old man was found, by endoscopic examination, to have type 2 advanced gastric adenocarcinoma with esophageal invasion in the cardia. Endoscopy and other modalities revealed observable esophageal invasion. To minimize surgical intervention, we treated him with S-1 and cisplatin as neoadjuvant therapy.

Strictly diastereocontrolled photocyclodimerization of 2-anthracenecarboxylates tethered to cyclic tetrasaccharides.

Photocyclodimerization of 2-anthracenecarboxylate tethered to a cyclic nigerosylnigerose scaffold gave a single chiral cyclodimer (out of two achiral and two chiral stereoisomers) in 99% optical and 96% chemical yields, achieving the ultimate stereocontrol of the supramolecular photochirogenesis in aqueous solution at 25 °C.

Supramolecular photochirogenesis with novel cyclic tetrasaccharide: enantiodifferentiating photoisomerization of (Z)-cyclooctene with cyclic nigerosylnigerose-based sensitizers.

Isophthalic and terephthalic acid monoesters of cyclic nigerosyl-(1→6)-nigerose (CNN), a cyclic tetrasaccharide composed of four d-glucopyranosyl residues connected by alternating α-1,3- and α-1,6-linkages, were synthesized as novel chiral supramolecular sensitizers for enantiodifferentiating photoisomerization of (Z)-cyclooctene (1Z) to planar chiral (E)-isomer (1E). Despite the saucer-shaped shallow cavity of CNN that does not immediately guarantee strong ground-state interactions with 1Z, the sensitizer-appended CNNs afforded optically active 1E in such enantiomeric excesses that are much improved than those obtained with an α-cyclodextrin analog and comparable with those obtained with a β-cyclodextrin analog. Interestingly, the enantiomeric excess values obtained were a critical function of temperature and solvent to show an inversion of the product chirality by changing the environmental variants.

[Successful withdrawal from disseminated intravascular coagulation caused by disseminated carcinomatosis of bone marrow originated from gastric cancer treated by sequential therapy consisting of MTX and 5-FU and palliative radiotherapy].

A 5 8-year-old man with severe back pain caused by multiple vertebral metastases developed disseminated intravascular coagulation(DIC). We adopted palliative radiotherapy(8 Gy/1 day)for palliation of his back pain as initial treatment. Afterwards, we started sequential chemotherapy consisting of methotrexate(MTX)and 5-fluorouracil(5-FU).

[An effective case of gemcitabine therapy with post-operative peritoneal recurrence of intrahepatic cholangiocarcinoma].

The patient was a 53-year-old man who had undergone left hepatectomy due to intrahepatic cholangiocarcinoma in August 2007. Pathologically, the tumor was diagnosed as a cholangiocellular carcinoma (T2, N0, M0, Stage II). Ascites appeared about one year after surgery and control was difficult using diuretics.

Evaluation of lipoxygenase inhibitory activity of anacardic acids.

6-Alkylsalicylic acids inhibit the linoleic acid peroxidation catalyzed by soybean lipoxygenase-1 (EC 1.13.11.

Anacardic acids and ferric ion chelation.

6-Pentadeca(e)nylsalicylic acids isolated from the cashew Anacardium occidentale L. (Anacardiaceae), commonly known as anacardic acids, inhibited the linoleic acid peroxidation catalyzed by soybean lipoxygenase-1 (EC 1.13.

Structures and physiological roles of 13 integral lipids of bovine heart cytochrome c oxidase.

All 13 lipids, including two cardiolipins, one phosphatidylcholine, three phosphatidylethanolamines, four phosphatidylglycerols and three triglycerides, were identified in a crystalline bovine heart cytochrome c oxidase (CcO) preparation. The chain lengths and unsaturated bond positions of the fatty acid moieties determined by mass spectrometry suggest that each lipid head group identifies its specific binding site within CcOs. The X-ray structure demonstrates that the flexibility of the fatty acid tails facilitates their effective space-filling functions and that the four phospholipids stabilize the CcO dimer.

Enlarging retro-odontoid pseudotumor after expanding cervical laminoplasty in the presence of kyphosis.

Background Context: In cranio-vertebral junction, retro-odontoid pseudotumor without evidence of rheumatoid arthritis is a rare condition.

Purpose: To discuss the mechanism of enlarging retro-odontoid pseudotumor after expanding cervical laminoplasty as a predictable complication.

Study Design: We report a rare case of an elderly man with non-inflammatory retro-odontoid pseudotumor after cervical expanding laminoplasty.

Methyl p-coumarate, a melanin formation inhibitor in B16 mouse melanoma cells.

p-Coumaric acid (4-hydroxycinnamic acid) and methyl p-coumarate (methyl 4-hydroxycinnamate) inhibit the oxidation of L-tyrosine catalyzed by mushroom tyrosinase. However, both were oxidized as monophenol substrate analogues at an extremely slow rate. This oxidation was significantly accelerated as soon as catalytic amounts (0.

Prosthetic alignment and sizing in computer-assisted total knee arthroplasty.

We implanted 60 posterior stabilized total knee prostheses (P.F.C.

Synergistic effects of anacardic acids and methicillin against methicillin resistant Staphylococcus aureus.

The synergistic effects of 6-alk(en)ylsalcylic acids, also known as anacardic acids, in combination with methicillin against Staphylococcus aureus ATCC 33591 (MRSA) was investigated. The double bond in C15-anacardic acids is not essential in eliciting the antibacterial activity but is associated with increasing the activity. The synergistic effects decreased with increasing the number of double bonds in the alkyl chain.

Antibacterial action of anacardic acids against methicillin resistant Staphylococcus aureus (MRSA).

The structural and antibacterial activity relationship of 6-alk(en)ylsalicylic acids, also known as anacardic acids, was investigated against Gram-positive bacteria, emphasizing the methicillin resistant Staphylococcus aureus ATCC 33591 (MRSA) strain. The unsaturation in the alkyl side chain is not essential in eliciting activity but is associated with increasing the activity. The antibacterial activity of methicillin against MRSA strains was significantly enhanced in combination with C(12:0)-anacardic acid, and the fractional inhibitory concentration index for this combination was calculated as 0.