Wang, Allen

Yan J. Wang J. Tissue D. Holaday A. S. Allen R. Zhang H. (2003) Protection of photosynthesis and seed production under water-deficit conditions in transgenic tobacco plants that over-express Arabidopsis ascorbate peroxidase // Grop Sci. V. 43. P. 1477-483. 

Allen DP, Crudden CM, Calhoun LA, Wang R, Decken A (2005) J Organomet Chem 690 5736-5746... 

Wipke BT, Wang Z, Nagengast W, Reichert DE, Allen PM. Staging the initiation of autoantibody-induced arthritis a critical role for immune complexes. J Immunol 2004 172(12) 7694-7702. 

Wang, X. C., C. Allen et al. (2007). Retinoic acid enhances the production of IL-10 while reducing the synthesis of IL-12 and TNF-alpha from LPS-stimulated monocytes/macrophages. J. Clin. Immunol. 27(2) 193-200. 

Finally, thermally induced isomerizations which generate carbon-centered biradical organic molecules have been shown to serve as alternative for conventional chemical and photochemical methods [71]. A straightforward procedure to accomplish such biradicals was described by Myers using a thermal conversion of yne-allenes [72]. According to this scheme, Wang and coworkers [73] heated 3-178 in 1,4-cyclohexadiene to 75 °C and obtained 3-181 in 22% yield via the biradicals 3-179 and 3-180 (Scheme 3.48). 

Sundararajan N, Yang S, Ogino K, Valiyaveettil S, Wang J, Zhou X, Ober CK, Oben-dorf SK, Allen RD (2000) Chem Mater 12 41... 

The nucleophilic attack on an acceptor-substituted allene can also take place at the acceptor itself, especially in the case of carbonyl groups of aldehydes, ketones or esters. Allenic esters are reduced to the corresponding primary alcohols by means of diisobutylaluminum hydride [18] and the synthesis of a vinylallene (allenene) by Peterson olefination of an allenyl ketone has also been reported [172]. The nucleophilic attack of allenylboranes 189 on butadienals 188 was investigated intensively by Wang and co-workers (Scheme 7.31) [184, 203, 248, 249]. The stereochemistry of the obtained secondary alcohol 190 depends on the substitution pattern. Fortunately, the synthesis of the desired Z-configured hepta-l,2,4-trien-6-ynes 191 is possible both by syn-elimination with the help of potassium hydride and by anti-elimination induced by sulfuric acid. Analogous allylboranes instead of the allenes 189 can be reacted also with the aldehydes 188 [250]. 

Wang s approach for the synthesis of enyne-allenes focused on ene-allenyl iodide 45 (Scheme 14.12) [24]. Palladium-catalyzed Sonogashira reaction of 45 with terminal alkynes 46 (R= Ph or CH2OH) proceeded smoothly under mild reaction conditions in the presence of the cocatalyst cuprous iodide and n-butylamine. The initially formed enyne-allene 47b with substituent R= CH2OH cyclized spontaneously to the corresponding a-methylstyrene derivative 48. 

Wang s synthesis of enyne-allenes by cross-coupling of ene-allenic iodides with alkynes has already been mentioned in Sect. 14.2.1.1 (Scheme 14.12). In a continuation of this work, the same group developed an alternative coupling reaction of allenylzinc chlorides 74 with enyne iodides 75 catalyzed by Pd(PPh3)4, which provided the expected enyne-allenes 76 in high yield and with excellent Z/E selectivity (Scheme 14.17) [38],... 

Timethylsilyl-substituted allenylcarbinols also react in the presence of AgN03, the trisubstituted allenes 59 deliver dihydrofurans 60, which are sensitive towards air oxidation to the furans, as reported by Wang et al. (Scheme 15.13) [29],... 

Hulme C, Ma L, Kumar NV, Krolikowski PH, Allen AC, Labaudiniere R (2000) Novel applications of resin bound a-amino acids for the synthesis of benzodiazepines (via Wang resin) and ketopiperazines (via hydroxymethyl resin). Tetrahedron Lett 41 1509-1514... 

Fentiman IS, Wang DY, Allen DS et al. Bone density of normal women in relation to endogenous... 

Further study by Katsuki, McMillen, Hashimoto, and Wang improved the enantioselectivity up to a moderately high level.Wang and co-workers further extended the asymmetric catalysis to the [2,3]-sigmatropic rearrangement of propargyl sulfonium ylide to give allenic products with up to 81% ee (Equation (18))." ... 

Submitted by PETER E. REED, JULIE M. BRAAM, LAUREN M. SOWA, ROBERT A. BARKHAU, GREGORY S. BLACKMAN, DAVID D. COX, GERALD A. BALL, HAU. H. WANG,f and JACK M. WILLIAMSf Checked by ALLEN E. UNDERHILL8... 

Ruennsheng Allen Wang, CEO Kenneth Luk, CFO Richard Yumin Gu, VP-Sales Aihua Wang, VP-R D Jianhua Zhao, CTO Fengming Zhang, VP-Mfg. Tech. 

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